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Patterns For Cloud Computing
 

Patterns For Cloud Computing

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Covers five patterns for cloud computing, showing implementations using Windows Azure

Covers five patterns for cloud computing, showing implementations using Windows Azure

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    Patterns For Cloud Computing Patterns For Cloud Computing Presentation Transcript

    • Patterns for Cloud Computing
    • Patterns for Cloud Computing This is Jim
    • Patterns for Cloud Computing Jim has many questions about cloud computing
    • Patterns for Cloud Computing The more he reads, the more confused he gets
    • Patterns for Cloud Computing “What is Cloud Computing?”
    • Patterns for Cloud Computing “What can I use the Cloud for?”
    • Patterns for Cloud Computing “What is Microsoft’s roadmap in this space?”
    • Answering these Questions can be Difficult
    • Answering these Questions can be Difficult So many alternative definitions from different vendors It can be difficult to describe what the cloud can be used for Keeping up with our beta and released products is challenging
    • Session Objectives
    • Session Objectives Explore a Clear Definition of Cloud Computing Arm you with 5 Patterns for Cloud-based Applications Show you how to Implement these Patterns using our Platform
    • Defining Cloud Computing
    • Defining Cloud Computing Jim has heard all the buzzwords
    • Defining Cloud Computing Service Oriented Architecture
    • Defining Cloud Computing Rich Internet Applications
    • Defining Cloud Computing Software as a Service
    • Defining Cloud Computing Software + Services
    • Defining Cloud Computing Are any of these cloud computing?
    • Defining Cloud Computing Styles of application architecture
    • Defining Cloud Computing These styles can work in the cloud, but they are not cloud computing
    • Defining Cloud Computing Where do your applications “live”?
    • Defining Cloud Computing On Premises Hosted Cloud
    • Defining Cloud Computing Application runs on-premises • Bring my own machines, Buy my own connectivity, software, etc.and hardware, • manage my own Complete control data center and responsibility • Upfront capital costs for the infrastructure
    • Defining Cloud Computing Application runs Application runs at a on-premises hoster • Bring my own • Rent machines, machines, connectivity, Buy my own Pay someone to software connectivity, software, etc.and hardware, host my application • Less control, but • manage my own Complete control using hardware that fewer data center and responsibility I specify responsibilities • Upfront capital • Lower capital costs, costs for the but pay for fixed infrastructure capacity, even if idle
    • Defining Cloud Computing Application runs Application runs at a Application runs using on-premises hoster cloud platform • Bring my own • Rent machines, • Shared, machines, connectivity, multi-tenant Pay someone for a Buy my own Pay someone to software environment connectivity, pool of computing software, etc.and hardware, host my application • Less control, but • Offers pool of resources that can • manage my own Complete control using hardware that fewer computing be applied to a set data center and responsibility I specify responsibilities resources, of applications abstracted from • Upfront capital • Lower capital costs, costs for the but pay for fixed infrastructure infrastructure capacity, even if idle • Pay as you go
    • Defining Cloud Computing Cloud “Variants”
    • Defining Cloud Computing Public Cloud
    • Defining Cloud Computing Pool of computing resources offered by a vendor, typically using a “pay as you go” model
    • Defining Cloud Computing Private Cloud
    • Defining Cloud Computing Pool of computing resources that lives within a self managed datacenter
    • Defining Cloud Computing Pool of computing resources that lives within a datacenter with no sharing
    • Defining Cloud Computing “What is Microsoft doing in Cloud Computing?”
    • Defining Cloud Computing Refer to the introductory Azure materials – not going to go through them here
    • Defining Cloud Computing 3 x Critical Concepts
    • Defining Cloud Computing Roles Web Role Worker Role
    • Defining Cloud Computing Storage Table, Blob, Relational
    • Defining Cloud Computing Messaging Queues
    • Patterns for Cloud Computing Using the Cloud for Scale
    • Patterns for Cloud Computing “Isn’t the cloud good for applications that need to scale dynamically?”
    • Patterns for Cloud Computing For example, tax applications
    • Patterns for Cloud Computing “How does this work?”
    • Patterns for Cloud Computing Let’s do some white boarding for Jim…
    • …and when I say white boarding, I really mean it
    • #1 - Using the Cloud for Scale “Wow! What a great site!” Request Browser Web Tier B/L Tier Database Response
    • #1 - Using the Cloud for Scale Browser Browser Browser Web Tier B/L Tier Database “Server Busy” Browser Browser
    • #1 - Using the Cloud for Scale Browser Browser Browser Web Tier B/L Tier Database Browser “Timeout” Browser
    • How would Jim do this today on premises?
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? Browser Browser Web Tier N Browser L Web Tier B/L Tier Database B Browser Web Tier Browser
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? Browser Browser B/L Tier N Browser Web Tier L B/L Tier Database B Browser B/L Tier Browser
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? Browser Browser Web Tier B/L Tier N N Browser L Web Tier L B/L Tier Database B B Browser Web Tier B/L Tier Browser
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? Browser p1 p2 p3 Browser Web Tier B/L Tier N N Browser L Web Tier L B/L Tier Database B B Browser Web Tier B/L Tier Browser
    • Not without consequences...
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? Browser p1 p2 p3 Browser Web Tier B/L Tier N N Browser L Web Tier L B/L Tier Database B B Browser Web Tier B/L Tier Browser “That took a lot of work - and money!”
    • #1 - Using the Cloud for Scale How would Jim do this today on premises? p1 p2 p3 “Not so great now…” Web Tier B/L Tier N N Browser L Web Tier L B/L Tier Database B B Web Tier B/L Tier “That took a lot of work - and money!” “Hmmm... Most of this stuff is sitting idle...”
    • #1 - Using the Cloud for Scale Datacenter peak load Usage Idle time Jan Apr Jul Oct
    • How can Windows Azure help?
    • #1 - Using the Cloud for Scale “Wow! What a great site!” Request Browser Web Role Worker Role Azure Storage Response
    • #1 - Using the Cloud for Scale Browser Browser Browser Web Role Worker Role Azure Storage “Server Busy” Browser Browser
    • #1 - Using the Cloud for Scale Browser Browser Web Role N Browser L Web Role Worker Role Azure B Storage Browser Web Role Browser You don’t see this bit
    • #1 - Using the Cloud for Scale Browser Worker Browser Web Role Role N N Worker Azure Browser L Web Role L Role Storage B B Browser Worker Web Role Role Browser
    • #1 - Using the Cloud for Scale Browser p1 p2 p3 Worker Browser Web Role Role N N Worker Azure Browser L Web Role L Role Storage B B Browser Worker Web Role Role Browser
    • OK, so changing config is easy... …but what else do I need to know?
    • #1 - Using the Cloud for Scale Browser p1 p2 p3 Worker Browser Web Role Role N N Worker Azure Browser L Web Role L Role Storage B B Browser Worker Web Role Role Browser
    • #1 - Using the Cloud for Scale Web Role Worker Role Tight coupling between web and worker role is an anti-pattern
    • #1 - Using the Cloud for Scale 4. Process Web Role Worker Role 2. Respond to UI Req 1 Place on queue . 3. Pickup from queue Queue
    • #1 - Using the Cloud for Scale 4. Process Web Role Worker Role Req 5. Add result to table Queue 6. Query table on refresh Table
    • Demo: PrimeSolvr
    • How many web and worker roles do you need?
    • #1 - Using the Cloud for Scale Browser Browser Web Role N Browser L Web Role Worker Role Azure B Storage Browser Web Role Browser Collate IIS logs Testing / MOM pack
    • #1 - Using the Cloud for Scale Web Role Worker Role Req Queue
    • #1 - Using the Cloud for Scale Web Role Worker Role Web Role Worker Role Web Role Worker Role Req Req Req Queue Web Role Worker Role Web Role Monitor queue Worker Role length against user’s Web Role expectations Worker Role
    • Patterns for Cloud Computing Takeaways Using configuration, Azure makes it easy to scale roles Understand how to communicate between Web and Worker role Strategy on when to scale up/down roles in production
    • Patterns for Moving to the Cloud Using the Cloud for Multi Tenancy
    • Patterns for Cloud Computing “I like the idea of scaling Web roles…”
    • Patterns for Cloud Computing “…but need to serve multiple customers”
    • Patterns for Cloud Computing “Without creating separate codebases!”
    • #2 - Using the Cloud for Multi Tenancy Browser Web Tier B/L Tier Database Customer #1
    • How would Jim do this today on premises?
    • #2 - Using the Cloud for Multi Tenancy How would Jim do this today on premises? Browser Web Tier B/L Tier Database Customer #1 Browser Web Tier B/L Tier Database Customer #2 Browser Web Tier B/L Tier Database Customer #3
    • Gets expensive pretty quickly
    • #2 - Using the Cloud for Multi Tenancy Browser Customer #1 Browser Web Tier B/L Tier Database Customer #2 Browser Customer #3
    • Schema Customizations UI Customizations
    • Schema Customizations UI Customizations
    • 3 options for data in multi tenant environment
    • #2 - Using the Cloud for Multi Tenancy Browser Fixed Schema Customer #1 Browser Web Tier B/L Tier Database Customer #2 Browser Option 1: Everyone Uses the Same Database/Schema Customer #3 Pros: Simplest approach, easy to maintain/upgrade. Cons: No customizations. Restoring of tenant data.
    • #2 - Using the Cloud for Multi Tenancy Browser Database Customer #1 Customer #1 Browser Web Tier B/L Tier Database Customer #2 Customer #2 Browser Database Customer #3 Customer #3 Option 2: Give Each Customer Their Own Database/Schema Pros: Flexible. Tenant restore is easier. High Isolation. Cons: Can be costly. Difficult to upgrade db schemas.
    • #2 - Using the Cloud for Multi Tenancy Browser Fixed Schema with Customizations Customer #1 Browser Web Tier B/L Tier Database Customer #2 Browser Option 3: Fixed Database/Schema, with customizations Customer #3 Pros: Customers can add their own custom fields Cons: Non standard way of customizing the schema. Tenant restore is difficult.
    • #2 - Using the Cloud for Multi Tenancy Tenant * 1 TenantID int TenantName nvarchar * Employee EmployeeId int TypeID * Type int FirstName nvarchar Name nvarchar LastName nvarchar CLRType nvarchar 1 1 Customization * int * CustomizationID Value nvarchar
    • #2 - Using the Cloud for Multi Tenancy Tenant * 1 TenantID 1 TenantName UK Branch * Employee EmployeeId 1 TypeID * Type 1 FirstName Gordon Name PostalCode LastName Brown CLRType string 1 1 Customization * 1 * CustomizationID Value SW1 2AA A
    • #2 - Using the Cloud for Multi Tenancy Tenant * 1 TenantID 2 TenantName US Branch * Employee EmployeeId 2 TypeID * Type 2 FirstName Barack Name ZipCode LastName Obama CLRType string 1 1 Customization * 2 * CustomizationID Value 20500
    • #2 - Using the Cloud for Multi Tenancy Tenant * 1 Fixed Schema TenantID 2 Applies to All Could be both TenantName US Branch * * Tenants Employee Type EmployeeId 2 TypeID 2 Customizable FirstName Barack Tenant by Tenant Name ZipCode LastName Obama Basis CLRType string 1 1 Customization * 2 * CustomizationID Value 20500
    • Schema Customizations UI Customizations
    • #2 - Using the Cloud for Multi Tenancy Browser Customer #1 Browser Web Tier B/L Tier Database Customer #2 Browser Customer #3
    • URL Handing
    • Can ASP .NET MVC Help?
    • Single Controller per Tenant http://employeedata.cloudapp.net/CompanyA (CompanyAController) http://employeedata.cloudapp.net/CompanyB (CompanyBController)
    • Shared Controller per Tenant http://employeedata.cloudapp.net/CompanyA (EmployeeController) http://employeedata.cloudapp.net/CompanyB (EmployeeController)
    • Shared Controller per Tenant (with URL mask) http://hr.companya.co.uk (http://employeedata.cloudapp.net/employees) http://hr.companyb.com (http://employeedata.cloudapp.net/employees)
    • #2 - Using the Cloud for Multi Tenancy http://hr.companya.co.uk Browser Customer #1 http://employeedata.cloudapp.net Browser Web Tier B/L Tier Database Customer #2 Browser Customer #3 http://hr.companyb.com
    • #2 - Using the Cloud for Multi Tenancy http://hr.companya.co.uk -> CNAME (employeedata.cloudapp.net) Browser Customer #1 http://employeedata.cloudapp.net Browser Web Tier B/L Tier Database Customer #2 Browser Customer #3 http://hr.companyb.com -> CNAME (employeedata.cloudapp.net)
    • #2 - Using the Cloud for Multi Tenancy http://hr.companya.co.uk -> CNAME (employeedata.cloudapp.net) Browser Customer #1 http://employeedata.cloudapp.net Browser Web Tier B/L Tier Database Customer #2 Use custom routing in ASP .NET MVC Browser Customer #3 http://hr.companyb.com -> CNAME (employeedata.cloudapp.net)
    • Demo: Multi Tenant Routing using ASP .NET MVC
    • Patterns for Cloud Computing Takeaways Always consider Multi Tenancy first, even if only one customer Design considerations must include both data and UI Many other considerations (such as identity)
    • Patterns for Moving to the Cloud Using the Cloud for Compute
    • Patterns for Cloud Computing Jim has seen how Azure enables multiple nodes
    • Patterns for Cloud Computing “Can I use all of these nodes in parallel?”
    • Patterns for Cloud Computing “I’ve got this multi-GB file I need analyzing…”
    • #3 - Using the Cloud for Compute Data Data Worker Data Client Master Worker Data Worker
    • #3 - Using the Cloud for Compute Result Worker Result Client Master Worker Result Worker Result
    • Popularized by the term “MapReduce”* * 2004 OSDI paper by Jeff Dean and Sanjay Ghemawat (Google)
    • #3 - Using the Cloud for Compute How many ”e”’s in “The quick brown fox jumps over the lazy dog”? M<k,v> Data Worker M<k,v> Client Master Worker M<k.v> Worker “Map” M<“the quick brown”.”e”> M<“fox jumps over”.”e”> M<“the lazy dog”.”e”>
    • #3 - Using the Cloud for Compute L<k,v> Worker L<k,v> Client Master Worker Result Worker L<k,v> 3 x ”e”s found “Reduce” L<”e”,”1”> L<”e”,”1”> L<”e”,”1”>
    • And it’s definitely popular...
    • #3 - Using the Cloud for Compute Google 20pb of data analyzed every day using MapReduce Yahoo! 10k+ cores, 4pb of data using MapReduce Facebook 2500+ cores, 1pb of data using MapReduce
    • Frameworks
    • #3 - Using the Cloud for Compute Apache Hadoop Open Source Java “Inspired by MapReduce” (Core, HDFS, many more) Cloudera Consulting, training, distribution of Hadoop Amazon Elastic MapReduce Hadoop implementation on EC2
    • How would Jim do this today on premises?
    • #3 - Using the Cloud for Compute How would Jim do this today on premises? Data Data Worker Data Client Master Worker Client Application Job/Task Scheduler Worker Data Remote Service
    • How about implementing this on Windows Azure?
    • #3 - Using the Cloud for Compute Data Worker Data Data Worker Client Web Role Data Client Application Job/Task Scheduler Worker Remote Service Req Queue Table
    • Demo: Windows Azure Demo “Inspired by MapReduce”
    • Patterns for Cloud Computing Takeaways MapReduce very visible, although can be difficult to initially grasp Learn about existing frameworks, especially Apache Hadoop Read up on Dryad (DryadLINQ) for future direction
    • Patterns for Moving to the Cloud Using the Cloud for Storage
    • Patterns for Cloud Computing “The cloud lets me store infinite data, right?”
    • Patterns for Cloud Computing Lots of headaches with data management today
    • Patterns for Cloud Computing “It sounds too good to be true…”
    • How does Jim do this today on premises?
    • #4 - Using the Cloud for Storage How would Jim do this today on premises? File RPC/NFS Client File Server Store
    • #4 - Using the Cloud for Storage How would Jim do this today on premises? Data TDS (Tabular Data Stream) Client DB Server RDBMS
    • #4 - Using the Cloud for Storage How would Jim do this today on premises? Data HTTP POST Browser Web Server Database
    • #4 - Using the Cloud for Storage I love I love you! you too! Server Data Affinity between your data and physical hardware that serves it
    • #4 - Using the Cloud for Storage I love I love you! you too! Server Data Symptoms: Which RAID number was that again? Tedious to backup exponentially growing data Crap! I’m at 95% capacity - got to move to a bigger disk
    • How does the cloud help?
    • Breaks the affinity between your data and hardware
    • #4 - Using the Cloud for Storage “Code Near” Pattern Data access code near to home, long data connection Client DAL Cloud Storage Good for offline scenarios + client applications DAL -> Storage typically REST connection
    • #4 - Using the Cloud for Storage “Code Far” Pattern Data access code far from home, short data connection Client Web Tier DAL Cloud Storage Good for browser based scenarios, but no offline. Good for “chattier” applications between DAL and database
    • Blobs, Tables, Relational
    • Blobs, Tables, Relational
    • #4 - Using the Cloud for Storage PutBlob Blob Container PUT http://account.blob.core.windows./net/containername/blobname REST API Client Azure Blob Storage http://account.blob.core.windows.net/containername/blobname PutBlob = 64Mb MAX MetaData = 8Kb per Blob
    • #4 - Using the Cloud for Storage Blob Container REST API Client Azure Blob Storage GetBlob GET http://account.blob.core.windows./net/containername/blobname http://account.blob.core.windows.net/containername/blobname
    • #4 - Using the Cloud for Storage Blob Container REST API Client Azure Blob Storage GetBlob GET http://account.blob.core.windows./net/containername/blobname Range: bytes=329300 - 730000 http://account.blob.core.windows.net/containername/blobname
    • #4 - Using the Cloud for Storage PutBlock(blobname, blockid, data) Blob Container PutBlockList(blobname, blockid1 …, blockidN) , REST API Client Azure Blob Storage http://account.blob.core.windows.net/containername/blobname PutBlock = 4Mb MAX to a maximum of 50Gb BlockId = 64 bytes
    • Blobs, Tables, Relational
    • #4 - Using the Cloud for Storage REST: GET http://account.table.core.windows.net/Customer?$filter=%20PartitionKey%20eq%20value LINQ: var customers = from o in context.CreateQuery<customer>(“Customer”) where o.PartitionKey == value select o; Worker Role Azure Table Storage http://account.table.core.windows.net Each Table: PartitionKey (e.g. DocumentName) to ensure scalability RowKey (e.g. version number) [fields] for data
    • Blobs, Tables, Relational
    • Codename Sitka (early 2008)
    • SQL Server Data Services (MIX08)
    • #4 - Using the Cloud for Storage This is what I’m doing on premises... Data TDS Client DB Server RDBMS
    • #4 - Using the Cloud for Storage So, this is what I would like to do in the cloud... Data TDS Client DB Server RDBMS
    • SQL Data Services (MIX09)
    • SQL Azure (July 2009)
    • #4 - Using the Cloud for Storage So, this is what I would like to do... Data TDS Client SQL Azure RDBMS
    • #4 - Using the Cloud for Storage HTTP TDS Browser Web Role SQL Azure RDBMS
    • #4 - Using the Cloud for Storage HTTP Queue TDS Browser Web Role Worker Role SQL Azure RDBMS
    • Migration!
    • #4 - Using the Cloud for Storage “The Data Center” HTTP TDS Browser Web Tier Bus. Logic SQL Server RDBMS
    • #4 - Using the Cloud for Storage “The Cloud” HTTP Queue TDS Browser Web Role Worker Role SQL Azure RDBMS
    • Demo: SQL Azure CTP
    • Patterns for Cloud Computing Takeaways Understand the pricing model for storage on-premises vs. cloud Read up and understand code near/code far models SQL Azure as a factor for migration/move from on premises
    • Patterns for Moving to the Cloud Using the Cloud for Communications
    • Patterns for Cloud Computing Jim’s organization needs to communicate with other organizations
    • Patterns for Cloud Computing “This has always been a very tricky and expensive process to get working”
    • Patterns for Cloud Computing “Does the cloud offer anything to help?”
    • How would Jim have done this before?
    • #5 - Using the Cloud for Communications Telco provided WAN Company 1 Company 2 Client Server FTP FTP Client Server
    • #5 - Using the Cloud for Communications Internet Telco provided WAN Company 1 Company 2 Client Server FTP FTP Client Server
    • #5 - Using the Cloud for Communications Internet Telco provided WAN Company 1 Company 2 DMZ Client Server Extranet Browser Site
    • What does the cloud provide?
    • #5 - Using the Cloud for Communications http://app.queue.core.windows.net/ REST Client Azure Queue
    • #5 - Using the Cloud for Communications Company 1 http://app.queue.core.windows.net/ Client REST Azure Queue Company 2 Client
    • #5 - Using the Cloud for Communications Company 1 http://app.queue.core.windows.net/ Client REST Azure Queue Company 2 Client
    • #5 - Using the Cloud for Communications Company 1 http://app.queue.core.windows.net/ Client Master Key REST Azure Queue Company 2 Client Master Key
    • #5 - Using the Cloud for Communications Company 1 http://app.queue.core.windows.net/ Client REST Web Role Azure Queue Company 2 Client
    • #5 - Using the Cloud for Communications Proxy? Company 1 Firewall http://app.queue.core.windows.net/ Client REST Web Role Azure Queue Company 2 Client Firewall
    • #5 - Using the Cloud for Communications Company 1 Firewall http://app.queue.core.windows.net/ Client REST Web Role Azure Queue Company 2 65.55.33.204 Client Firewall 192.168.14.100 NAT?
    • #5 - Using the Cloud for Communications Company 1 Firewall http://app.queue.core.windows.net/ Client REST Web Role Azure Queue Company 2 65.55.33.204 Client Firewall 192.168.14.100 OK, so I’ll do a HTTP poll every minute
    • #5 - Using the Cloud for Communications Company 1 Firewall http://app.queue.core.windows.net/ Client REST Web Role Azure Queue Company 2 65.55.33.204 Client Firewall 192.168.14.100 …and how about other protocols other than HTTP?
    • How does the .NET Service Bus help?
    • #5 - Using the Cloud for Communications Company 1 sb://.../myqueue Client .NET Service Bus Company 2 Client Firewall Outbound bi-directional socket Kept alive in background
    • #5 - Using the Cloud for Communications Company 1 Firewall sb://.../myqueue Client Outbound one-way socket .NET Service Bus Company 2 Message routed Client accordingly Firewall Outbound bi-directional socket Kept alive in background
    • #5 - Using the Cloud for Communications This Conference MySQL Admin Firewall sb://.../myqueue My Laptop Outbound one-way socket Localhost:1000 .NET Service Bus My Home Message routed Home PC accordingly 192.168.14.193 Firewall Outbound bi-directional socket Kept alive in background My SQL Port 3306
    • Demo: Socket Shifter
    • Patterns for Cloud Computing Takeaways Be careful consuming Azure queues directly via REST Firewalls/NATs can add additional trouble (especially non-HTTP) Learn how .NET Service Bus traverses in these scenarios
    • Next Steps
    • Next Steps Obviously, our friend Jim, is fake…
    • Next Steps Make sure you have a clear definition of Cloud Computing Explore the 5 usage patterns for your scenarios today Think about the next steps for implementation and migration
    • simon.guest@microsoft.com http://simonguest.com