Symfony live London 2018 - Take your http caching to the next level with xke...André Rømcke
Joind.in: https://joind.in/event/symfonylive-london-2018/take-your-http-caching-to-the-next-level-with-xkey--fastly
Demo application using Varnish xkey:
https://github.com/andrerom/sf-london-2018-httpcache-demo
Example of Fastly Proxy Client:
https://github.com/andrerom/sf-london-2018-httpcache-demo/tree/fastly
What is a container? Is it really a “lightweight VM” or is it more like a Linux process? In this talk you'll see exactly what a container is, as Liz builds one from scratch in a few lines of Go code. You'll learn how namespaces, control groups and chroot are used to construct containers, and how they are isolated from each other and from the host machine they run on.
Symfony live London 2018 - Take your http caching to the next level with xke...André Rømcke
Joind.in: https://joind.in/event/symfonylive-london-2018/take-your-http-caching-to-the-next-level-with-xkey--fastly
Demo application using Varnish xkey:
https://github.com/andrerom/sf-london-2018-httpcache-demo
Example of Fastly Proxy Client:
https://github.com/andrerom/sf-london-2018-httpcache-demo/tree/fastly
What is a container? Is it really a “lightweight VM” or is it more like a Linux process? In this talk you'll see exactly what a container is, as Liz builds one from scratch in a few lines of Go code. You'll learn how namespaces, control groups and chroot are used to construct containers, and how they are isolated from each other and from the host machine they run on.
Building High Performance Web Applications with the Windows Azure PlatformWade Wegner
The Windows Azure Platform enables developers to build dynamically scalable web applications easily. Come and learn how services like the Content Delivery Network (CDN) and Windows Azure AppFabric Caching can help you build high-performance web applications in Windows Azure. In this session we’ll share some tips & tricks to improve performance when using web & worker roles in Azure, and to optimize your overall application for maximum performance.
Wine is a compatibility layer capable of running Windows applications on several POSIX-compliant operating systems, such as Linux (Ubuntu, RedHat, Suse, Debian etc.), OS X, Solaris and Free BSD. Instead of simulating internal Windows logic like a virtual machine or emulator Wine translates and converts API calls from the original Win Exe!
JCache is here. Say Goodbye to proprietary Caching APIs!Jaromir Hamala
My presentation on JCache (JSR-107) I gave at JFokus 2015 in Sweden.
I aimed to keep my talk as much neutral as possible. All currently existing JCache implementation were mentioned in the presentation. I did use Reference Implementation, Hazelcast, EHcache and Infinispan in my demos. I skipped Oracle Coherence as I wasn't sure about its license.
"FreeBSD preseed installation" is a Google Summer of Code 2014 project for FreeBSD organization to provide a non interactive, unattended FreeBSD installation process from the network and without the usage of NFS server. It's an extension for scripted bsdinstall and allows to install many instances of FreeBSD easily, without complicating configuration services like NFS or TFTP, which is not obvious for beginning users. The second part of the project is about booting the FAI (Fully Automatic Installer) from the network by PXE. An installer distro was created and based on mfsBSD.
If you’re an experienced PHP developer, you already have a head start on learning how to write Node.js code. However, Node.js is very diffrence from PHP. By comparing specific PHP features with their Node counterparts, you’ll also discover how to refactor and improve existing source code
This is a short and simple presentation explaining ssl. After watching this SlideShare you’ll have an understanding of how ssl functions, knowledge of its benefits, and know why you should enable ssl on your websites.
Getting instantly up and running with Docker and SymfonyAndré Rømcke
A look into how you can start to use Docker today with ready made setup with php7, nginx, redis, blackfire and so on. How you may extend it, and integrating it into your continuous integration workflow, and how you can setup a continuous deployment workflow using for instance Travis-CI.
Quicklink: https://legacy.joind.in/19070
PHP UK 2017 - Don't Lose Sleep - Secure Your RESTAdam Englander
Are you worried that your REST API may be the next victim of an attack by ruthless hackers? Don't fret. Utilizing the same standards implemented by OAuth 2.0 and OpenID Connect, you can secure your REST API. Open and proven standards are the best ways to secure your REST APIs for now and well into the future. JSON Object Signing and Encryption (JOSE) is the core of a truly secure standards based REST API. In this talk, you will learn how to use the components of JOSE to secure your REST API for now and the future.
Building High Performance Web Applications with the Windows Azure PlatformWade Wegner
The Windows Azure Platform enables developers to build dynamically scalable web applications easily. Come and learn how services like the Content Delivery Network (CDN) and Windows Azure AppFabric Caching can help you build high-performance web applications in Windows Azure. In this session we’ll share some tips & tricks to improve performance when using web & worker roles in Azure, and to optimize your overall application for maximum performance.
Wine is a compatibility layer capable of running Windows applications on several POSIX-compliant operating systems, such as Linux (Ubuntu, RedHat, Suse, Debian etc.), OS X, Solaris and Free BSD. Instead of simulating internal Windows logic like a virtual machine or emulator Wine translates and converts API calls from the original Win Exe!
JCache is here. Say Goodbye to proprietary Caching APIs!Jaromir Hamala
My presentation on JCache (JSR-107) I gave at JFokus 2015 in Sweden.
I aimed to keep my talk as much neutral as possible. All currently existing JCache implementation were mentioned in the presentation. I did use Reference Implementation, Hazelcast, EHcache and Infinispan in my demos. I skipped Oracle Coherence as I wasn't sure about its license.
"FreeBSD preseed installation" is a Google Summer of Code 2014 project for FreeBSD organization to provide a non interactive, unattended FreeBSD installation process from the network and without the usage of NFS server. It's an extension for scripted bsdinstall and allows to install many instances of FreeBSD easily, without complicating configuration services like NFS or TFTP, which is not obvious for beginning users. The second part of the project is about booting the FAI (Fully Automatic Installer) from the network by PXE. An installer distro was created and based on mfsBSD.
If you’re an experienced PHP developer, you already have a head start on learning how to write Node.js code. However, Node.js is very diffrence from PHP. By comparing specific PHP features with their Node counterparts, you’ll also discover how to refactor and improve existing source code
This is a short and simple presentation explaining ssl. After watching this SlideShare you’ll have an understanding of how ssl functions, knowledge of its benefits, and know why you should enable ssl on your websites.
Getting instantly up and running with Docker and SymfonyAndré Rømcke
A look into how you can start to use Docker today with ready made setup with php7, nginx, redis, blackfire and so on. How you may extend it, and integrating it into your continuous integration workflow, and how you can setup a continuous deployment workflow using for instance Travis-CI.
Quicklink: https://legacy.joind.in/19070
PHP UK 2017 - Don't Lose Sleep - Secure Your RESTAdam Englander
Are you worried that your REST API may be the next victim of an attack by ruthless hackers? Don't fret. Utilizing the same standards implemented by OAuth 2.0 and OpenID Connect, you can secure your REST API. Open and proven standards are the best ways to secure your REST APIs for now and well into the future. JSON Object Signing and Encryption (JOSE) is the core of a truly secure standards based REST API. In this talk, you will learn how to use the components of JOSE to secure your REST API for now and the future.
Beyond Design Patterns and Principles - PHPBenelux 2017Matthias Noback
Of course, you should read all you can about SOLID, Design patterns, Patterns of Enterprise Application Architecture, etc. Once you have a basic understanding of these topics you still have to write that code though, and write it well too! What is good code? Are there some guidelines, or rules of thumb, which you can follow while making your everyday coding decisions?
In this talk I’ll cover many of these coding guidelines, which aren’t usually covered by patterns or principles books. They should help you write better code and give you a richer vocabulary for reviewing other people’s code. Some of the subjects that we’ll discuss are: state, mutability, CQS, one-method objects, domain-first, API-driven, functional programming influences, object boundaries, (de)serialization, and many more!
UX Mind Games: The Secrets of Addictive Digital Experiences by Stephen MacKleyeZ Systems
Stephen MacKley UX Director at Beaconfire RED presented at re\VISION NYC in December 2016. He talked about the most compelling digital experiences leverage psychology and game theory to ensure that users come back again and again. This session will focus on identifying these principles and applying them to your organization’s omni-channel digital experiences. Examples will be drawn from such addictive sites and apps like Facebook, Buzzfeed, Pokemon Go, Tindr, Clash of Clans, and Snapchat.
Silo-Based Architectures for High Availability Applications @CodeCampClujTekkie Consulting
High availability is becoming a de-facto requirement of today's applications. Customer-facing IT failures mean directly losing customer revenue and trust, as users have grown accustomed to easily switching service providers for more reliable ones. Lack of internal systems availability block employee productivity and add to the financial burden. Thus, it is critical to have a healthy, performant, resilient IT structure serving as a backbone of conducting your business. But there are no textbook solutions to achieving five 9s availability.
Data redundancy, computing clusters, load balancing, fail-over mechanisms, each of these individually addresses one potential issue, but none treats systems in your organisation holistically for maximising business revenue.
Silos are a clever method of grouping servers in such a way that they can be scaled both horizontally and vertically, depending on the actual application needs. Most importantly, it frees you from over-optimizing the architecture upfront, by allowing fine adjustments easy to integrate in your Agile workflow.
The new JSON fields are some of the most talking about new features in MySQL 5.7. But they are by no means the only awesome things this version has to offer. MySQL 5.7 is a year old, so this talk won't be an introduction to this version. We will be digging into 5.7 to see how to make the most of the tools available in it. Want to tackle important practical problem solving for your data, make your query performance analysis more efficient or look at how virtual columns can help you index data? This talk is for you!
Software bugs are inevitable; some are especially difficult to track down, causing you to waste countless hours before throwing your hands up in defeat. It doesn't have to be this way! The mental fatigue and wasted time can be avoided by using strategies like identifying the most-appropriate tool, taking a logical & objective approach, challenging assumptions, listening to variables, isolating the code path, and reinforcing code with automated tests. Attendees will learn how to combine these techniques with the right mindset and attitude in order to debug their code quickly and effectively.
A recommendation engine for your php applicationMichele Orselli
Nowadays a lot of websites try to guess what we might like: ”Recommendation for you in books”
”People you may like”
Sounds familiar, isn’t it? Wouldn’t be cool if you could do the same in your application? Well, this session is for you! In the first part of this talk recommendation systems will be introduced, focusing on collaborative filtering algorithms (CR). After that we’ll dive in Prediction.io, an open source machine learning server for software developers to create predictive features, such as personalization, recommendation and content discovery. In the last part we’ll cover the integration details with a PHP application
Software bugs are inevitable; some are especially difficult to track down, causing you to waste countless hours before throwing your hands up in defeat. It doesn't have to be this way! The mental fatigue and wasted time can be avoided by using strategies like identifying the most-appropriate tool, taking a logical & objective approach, challenging assumptions, listening to variables, isolating the code path, and reinforcing code with automated tests. Attendees will learn how to combine these techniques with the right mindset and attitude in order to debug their code quickly and effectively.
s React.js a library or a framework? In any case, it is a new way of working that represents a revolution in the way of building web projects. It has very particular characteristics that allow us, for instance, to render React code from the server side, or to include React components from Twig tags. During this talk we will present React.js, we will explore how to take advantage of it from PHP projects and we will give answers to practical problems such as universal (isomorphical) rendering and the generation of React.js forms from Symfony forms without duplication of efforts.
Code Coverage for Total Security in Application MigrationsDana Luther
So the time has come to take the leap and upgrade your application to a new major version of the underlying framework, or, perhaps, to an entirely different framework... how do you ensure that none of your functionality or usability is impacted by a potentially drastic rewrite of the underlying systems? How can you move forward with 100% confidence in your migrated codebase? Testing, testing and more testing. Using a combination of unit, functional and acceptance tests can give you the certainty you need. In this talk, we will go over key strategies for ensuring that you begin with full code coverage and move forward with confidence.
With more and more sites falling victim to data theft, you've probably read the list of things (not) to do to write secure code. But what else should you do to make sure your code and the rest of your web stack is secure ? In this tutorial we'll go through the basic and more advanced techniques of securing your web and database servers, securing your backend PHP code and your frontend javascript code. We'll also look at how you can build code that detects and blocks intrusion attempts and a bunch of other tips and tricks to make sure your customer data stays secure.
We use tokens to identify resources and try to ensure data security in insecure environments, however the management of these tokens can get quite complex. When we have distributed environments things are harder to deal with. Come to the magical world of JSON Web Tokens and make your life simpler!
Thanks to tools like vagrant, puppet/chef, and Platform as a Service services like Heroku, developers are extremely used to being able to spin up a development environment that is the same every time. What if we could go a step further and make sure our development environment is not only using the same software, but 100% configured and set up like production. Docker will let us do that, and so much more. We'll look at what Docker is, why you should look into using it, and all of the features that developers can take advantage of.
Look Towards 2.0 and Beyond - eZ Conference 2016André Rømcke
eZ Platform and eZ Studio: Where We Are, Where We Are Going, and a Look Towards 2.0 and Beyond
eZ’s next gen content management platform continues to evolve and there’s plenty more to come. How has the platform transformed and what are the major plans for the future? This talk will cover the spectrum, from the repository, the UI and our API-driven architecture to deployment via container-based technology and the move to Symfony3.
See also blog post where this was first announced: http://ezplatform.com/Blog/2.x-and-beyond-what-to-expect-next
eZ Platform and eZ Studio: Where We Are, Where We Are Going, and a Look Towar...eZ Systems
Presentations given at eZ Conference 2016 in Paris by André Rømcke, VP Engineering at eZ Systems.
eZ’s next gen content management platform continues to evolve and there’s plenty more to come. How has the platform transformed and what are the major plans for the future? This talk will cover the spectrum, from the repository, the UI and our API-driven architecture to deployment via container-based technology and the move to Symfony3.
SymfonyCon 2019: Head first into Symfony Cache, Redis & Redis ClusterAndré Rømcke
Symfony Cache has been around for a few releases. But what is happening behind the scenes? Talk focuses on how is it working, down to detail level on Redis for things like datatypes, Redis Cluster sharding logic, how it differs from Memcached and more.
Hopefully you’ll learn how you can make sure to get optimal performance, what opportunities exists, and which pitfalls to try to avoid.
https://amsterdam2019.symfony.com/speakers
NOTE: This talk is recorded and available on SymfonyCasts, in the future it will also be uploaded to youtube.
Scaleable PHP Applications in KubernetesRobert Lemke
Kubernetes is also called the "distributed Linux of the cloud" – which implies that it provides fundamental infrastructure, which can solve a lot of challenges. Let’s see how PHP applications fit into this picture. In this presentation, we are going to explore when Kubernetes is a good fit for operating your PHP application and how it can be done in practice. We’ll look at the whole lifecycle: how to build your application, create or choose the right Docker images, deploy and scale, and how to deal with performance and monitoring. At the end you will have a good understanding about all the different stages and building blocks for running a PHP application with Kubernetes in production.
Nice performance using Sf2 cache wrapping Sf1 applicationMarc Weistroff
In collaboration with Emmanuel Cohen.
At a key moment for online press in France, a major French news company chooses PHP and Symfony to extend its popular web site. We will present the architecture we designed at Sensio Labs to meet a very good performance requirement. We used Symfony2 kernel wrapping symfony 1.4 and relied on loose-coupled applications serving content from heterogeneous backend sources.
Open Source Development
Building your own Custom Firefox (or LibreOffice/OpenOffice)
from the Nightly or Developer Source Code
GIT / Mercurial (code sharing / version control)
What's new in HTML5 and JavaScript 2015
ECMAScript 2015 (ES6)
const, class, let, for of, function*, import
AD113 Speed Up Your Applications w/ Nginx and PageSpeededm00se
My slide deck from my session, AD113: Speed Up Your Applications with Nginx + PageSpeed, at MWLUG 2015 in Atlanta, GA at the Ritz-Carlton.
For more, see:
- https://edm00se.io/self-promotion/mwlug-ad113-success
- https://github.com/edm00se/AD113-Speed-Up-Your-Apps-with-Nginx-and-PageSpeed
Photoshop is to Gimp, Illustrator is to Inkscape, Microsoft Office is to Open Office - since 2005, Open Source Flash refers to building knowledge/tools/programs for the Flash platform. Their main website is osflash.org and they serve as a wiki/forum/vehicle to generate awareness and contain useful resources. In the talk I hope to share history and knowledge of a few useful tools that can be used in/developed on linux. Example - compilers, development environments, etc.
JavaScript News, May '17 edition:
Native ES modules at browsers
Cool libs (HR.js, React VR, AcrossTabs, stylelint, sizzy, k6)
Glimpse, new debugging tool
Polymer 2.0 landed
Google I/O takeaways
The Modern Mobile Web: State of the Union
npm 5.0
Node.js 8.0
And few this to mention from April '17 news
new React (v15.5.0)
bye-bye Phantom.js and hello headless Chrome
new MS Edge
new Firefox (v53)
new Chrome (v58 and v59b)
Browser’s market share
Facebook F8 takeaways
SfDay 2019: Head first into Symfony Cache, Redis & Redis ClusterAndré Rømcke
Symfony Cache has been around for a few releases. But what has been happening behind the scenes? Talk focuses on how is it working, down to detail level on Redis for things like datatypes, Redis Cluster sharding logic, how it differs from Memcached and more.
JavaScript news in December 2017 edition:
+ Kill Internet Explorer
+ Google Chrome 63 Released
+ How to Cancel Your Promise
+ Parcel
+ Turbo
+ Average Page Load Times for 2018
+ Vulnerable JavaScript Libraries
+ New theming API in Firefox
+ Bower is dead
+ Extension Tree Style Tab: Reborn
+ React v16.2.0
+ WebStorm 2017.3.1
+ The Best JavaScript and CSS Libraries for 2017
So you've been deploying Java in the cloud and are wondering how to handle the new world of containers, microservices, and memory constraints. Cold starts got you down? Come to this session to learn about how the OpenJ9 and the JVM in general can help you on your Cloud Native journey.
Similar to PHP Benelux 2017 - Caching The Right Way (20)
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
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COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
1. CACHING THE RIGHT WAY
Increase Your Application Performance & Validate It With Profiling
André Rømcke (@andrerom)
VP Engineering at eZ Systems (@ezsystems)
Jan. 28th 2017 - Antwerp - #PHPBenelux 2017
2. www.ez.no
Who?
๏André Rømcke | @andrerom
๏Norwegian, mountains, skiing, biking, running, technology, beer, wine, foodie, ..
๏PHP for 11 years. From 96: Html, CSS, JS, VB, C#, PHP, Bash, Groovy, (Hack)
๏Contributed to Symfony, FOS, Stash, Composer, PHP-FIG, Docker, & attempts for PHP
๏VP Engineering at eZ Systems
๏eZ Systems AS | ez.no
๏Global, 70+ people across 7+ countries, partners & community in many many more
๏Maker of eZ Publish since 2001, 6th+ gen called eZ Studio (commercial) & eZ Platform
๏eZ Platform | ezplatform.com
๏“New” open source Content Management System, a super flexible Full & Headless CMS
๏Developed on Symfony (v2.x) Full Stack since 2012, upcoming major on Symfony v3.3
4. www.ez.no
So what is it with this talk? And what not?
๏Talk focusing on cache tagging in Varnish and in Symfony Cache
๏It’s benefits, practice and profiling
๏Talk is specific about eZ Platform, and move from a cache approach that
๏This is in this case using, but not going into details on:
๏FOSHttpCache: See David Buchmann’s talk for that at 11:40
๏PSR-6: See Hannes Van De Vreken’s talk on that at 14:50
6. www.ez.no
eZ Platform 1.x: Overview
๏6th generation of eZ Publish, a CMS that has been around since 2001
๏Several large users around the world
๏Focus on being very extendable so it can be used in many cases
๏A tree based content model, we’ll come back to this
๏So old but “new” in the sense that it is a new product rewritten on Symfony
๏So more modern, but with less features
8. www.ez.no
eZ Platform 1.x: Persistance Cache
๏Currently built using Stash cache
๏A hierarchal cache, allowing you to clear trees of cache items
๏Benefit 1: Easy to get started
๏Problem 1: End up clearing to much cache
๏Problem 2: Many lookups to backend to resolve items
9. www.ez.no
eZ Platform 1.x: HttpCache
๏Uses FOSHttpCache[Bundle] 1.x
๏Lets you vary cache by user context (rights)
๏Lets you tag the response and BAN based on this
๏Problem 1: BAN on Varnish does not support grace
๏Problem 2: Multiple tags only on Varnish
12. www.ez.no
Problem
Examples:
๏Data cache (PSR-6, ..):
๏Entity can be present on several cache keys
๏eg: Item lookup by id or by identifier/remote-id, in listings, ..
๏Reverse Proxy (Varnish with FosHttpCache, ..):
๏Entity can be rendered on several different pages (url ~= key)
๏And url won’t represent the unity when it’s a “fragment” of the page
๏It can also be, or not be, on a variant of a page depending on user rights
Result: Need for knowledge between Cache items and Commands/Actions affecting it.
14. Look at real world Solutions:
Symfony Cache (3.2+)
15. www.ez.noez.no
Symfony Cache Component
๏PSR-6 Compliant cache component
๏Aims to be fast, made by among others Blackfire CTO: Nicolas Grekas
๏Supports multi get calls to Redis and Memcached
๏Provides several built in cache adapters by default
๏Is progressively being used in several places in Symfony Framework, e.g.:
๏PropertyInfo
๏Serializer
๏Validator
๏(…)
๏.. And hopefully HTTP Cache at some point
16. www.ez.noez.no
Symfony Cache Adapters
๏Adapters:
๏APCu (per proces cache)
๏Array (in memory per request, mainly for testing)
๏Chain (chain several adapters after each-other)
๏Doctrine
๏FileSystem (Also PHPFile and PHPArray implementation for immutable opcache cache)
๏Proxy (To reuse other PSR-6 implementations)
๏Redis
๏Memcached
๏And TagAware..
17. www.ez.noez.no
Symfony Cache Backend Lookups
Stash Cache* Doctrine Cache** Symfony Cache***
loadContenetInfo(66) 5 2 1
loadContenet(66) 6 2 1
findContent($query)
10 items 42 2 1
*** With native adapters,
not Doctrine.
* memcached/redis, to compute keys
for hierarchical cache.
** With versioning.
18. www.ez.noez.no
Cache Backend latency with Stash
๏AWS ElasticCache Redis instances has latency of:
๏On larger EC2 instances: 0.2-0.5ms
๏On micro/small instances: Apparently much more
๏This means when proxy cache is cold:
๏Simple page with 20 items shown:
๏~82 lookups x latency = 16-41 ms
๏Large landing page with 200-1000 items shown:
๏~8.000-40.000 lookups x latency = 1.6-20 seconds
๏In theory Symfony cache should get a 4th of that
๏And much less if its support for multiple get is taken advantage of.
19. Look at real world Solutions:
Varnish xkey VMOD (4.1+)
20. www.ez.no
๏Formally: Surrogate keys, Hash Ninja, Secondary Hash/Hash-Two
๏Dedicated secondary hashes to objects
๏Much more efficient for tag purging then BAN is
๏Allows for expiring objects with softpurge() for use with grace
๏Deliver stale data while refresh happens in the background
๏Part of official `varnish-modules` VMOD collection package
๏Already part of Ubuntu, upcoming Debian and probably RHEL
Varnish xkey VMOD
21. www.ez.no
๏PR in progress to support in FOSHttpCache 2.1
๏Simple configuration and VCL change to switch from BAN
Varnish xkey & FOSHttpCache
22. Sip of demo time:
Some code examples, and if time profiling
ongoing move to Symfony 3.x (incl Cache
Component)
23. www.ez.no
๏For pure move from Stash to Symfony Cache just using file system as cache
๏With Reverse proxy disabled to hit backend
Demo Profiling Result
24. www.ez.no
๏Profiling should have been done using Redis/Memcached on AWS setup
๏20% improvements would have been many times more with latency
๏The profiling was done with Blackfire,
๏For your own use you can also use xdebug profiling, tideways.io, (..)
Demo Profiling Retrospective
25. The End, Questions?
This talk: https://joind.in/talk/66ef8
Other talks: http://www.slideshare.net/andreromcke
Twitter: @andrerom
FOSHttpCache: http://foshttpcache.readthedocs.io/en/latest/
Varnish xkey: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_xkey.rst