(In Portuguese) Seu produto é um sucesso, e agora? desafios técnicos que uma start-up enfrenta -

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The document discusses the technical challenges that startups face after initial product success. It covers different approaches to software engineering used by startups, including moving from monolithic architecture to microservices. It recommends not over-standardizing and reusing code when scaling technology, in order to encourage innovation.

Technology

Seu produto é um
sucesso, e agora?
desaﬁos técnicos que
uma start-up enfrenta
Phil Calçado - SoundCloud
@pcalcado
http://philcalcado.com
Thursday, February 16, 12

ôpa!

meu nome é
phillip.

Thursday, February 16, 12

eu trabalho aqui:

Thursday, February 16, 12

e você deveria ir pra lá também.

Thursday, February 16, 12

http://bit.ly/work-at-soundcloud

Thursday, February 16, 12

as pessoas desenvolvem
sistemas de maneiras bem
diferentes hoje em dia.

Thursday, February 16, 12

“Engenharia de Software”
(i.e. waterfall)

Thursday, February 16, 12

Startup
(i.e. “Eu não tenho a menor idéia se esse
troço vai vingar...”)

Thursday, February 16, 12

experimentação
rápida.

Thursday, February 16, 12

mas e o sistema,
como ﬁca?

Thursday, February 16, 12

sound.erb

SoundController
view
upload

Sound

Database

Thursday, February 16, 12

sound.erb sound.json.erb

SoundController SoundApiController
view view
upload upload

Sound
Database

Thursday, February 16, 12

sound.erb sound.json.erb

UploadController SoundController SoundApiController
upload view view
upload

S3
Sound Database

Thursday, February 16, 12

Cache

sound.erb sound.json.erb

UploadController SoundController SoundApiController
upload view view
upload

S3
Sound Database

Cache

Thursday, February 16, 12

Cache

sound.erb sound.json.erb

UploadController SoundController SoundApiController
upload view view
upload

S3 Database Database Database
1 2 N
Sound

Cache Master/Slave

Thursday, February 16, 12

startups
A grande maioria falha

Thursday, February 16, 12

startups
A grande maioria falha,
fazer é mais importante que planejar

Thursday, February 16, 12

startups
A grande maioria falha,
mas algumas dão certo.

Thursday, February 16, 12

Após esta corrida dos 100m rasos,
como recuperar o fôlego?

Thursday, February 16, 12

1) Não padronize, encoraje
2) Não re-comece do zero
3) Quebre o monolito

Thursday, February 16, 12

1) Não padronize, encoraje

Thursday, February 16, 12

2) Não re-comece do zero

Thursday, February 16, 12

2) Não re-comece do zero
App 1

Vídeo Música App 2
Banco de
Dados
Data de
Matéria Aniversário

"O Framework"
App N

Thursday, February 16, 12

2) Não re-comece do zero

Vídeo Música
Banco de Música
Dados OBM*
Data de
Matéria Aniversário Vídeo

"O Framework" App N+1

* OBM: Object-to-Bolovo Mapper

Thursday, February 16, 12

3) Quebre o monolito

Thursday, February 16, 12

3) Quebre o monolito

VídeoController MúsicaController

Vídeo Música

Data de
Matéria Aniversário

Thursday, February 16, 12

3) Quebre o monolito

VídeoController MúsicaController

Vídeo Música

Matéria
Data de
Aniversário

Thursday, February 16, 12

3) Quebre o monolito

VídeoController MúsicaController

MúsicaService

Vídeo

Música
Matéria

Data de
VídeoService Aniversário

Thursday, February 16, 12

3) Quebre o monolito

Matéria

<<interface>> MúsicaController

Vídeo

Música
Data de
Aniversário

VídeoController

<<interface>>
VídeoService MúsicaService

Thursday, February 16, 12

Problemas ﬁnanceiros são resolvidos
com dinheiro.

Thursday, February 16, 12

Problemas ﬁnanceiros são resolvidos
com dinheiro.
Problemas técnicos requerem
dinheiro e tempo.

Thursday, February 16, 12

TALK #2: Microservices vs. The First Law of Object Design We've been breaking systems and application into smaller components for a long time now. From Component-Based Design to Distributed Objects to SOA to what is today's preferred golden hammer: microservices. One definition of microservices is that it is a flavor of SOA that emphasizes many specialize services versus a few more generalist ones. Often these microservices are so small that they take care of a single "object". Distributed objects aren't new to this industry, and in 2003, Martin Fowler wrote a classic article where he discusses several problems with this model, and proposes the First Law of Distributed Objects: "Objects have been around for a while, and sometimes it seems that ever since they were created, folks have wanted to distribute them. However, distribution of objects, or indeed of anything else, has a lot more pitfalls than many people realize, especially when they're under the influence of vendors' cozy brochures. This article is about some of these hard lessons-lessons I've seen many of my clients learn the hard way... my First Law of Distributed Object Design: Don’t distribute your objects!" Reinventing the wheel is nothing new in our field, but if microservices are meant to be small, how can we avoid the same problems from the past? What are the technologies, architectures, protocols, and practices we need in place to make sure that our microservices architecture isn't just the largest bowl of spaghetti this organization has ever cooked? SPEAKER: Phil Calçado, Director of Software Engineering at DigitalOcean Phil Calçado works at DigitalOcean, where he helps build the cloud for developers. Before that, he spent four years building the team and architecture behind SoundCloud's move from a monolith to microservices. He tweets at @pcalcado writes at http://philcalcado.com.

Scaling Agile at Spotify (representation)

Vlad Mysla

Growing up with agile - how the Spotify 'model' has evolved

Peter Antman

the afterparty: refactoring after 100x hypergrowth

Phil Calçado

PicPay is the largest digital wallet in Latin America. We offer peer-to-peer payments, BNPL, credit cards, personal loans, insurance, investing, trading, and other financial products to 60 million people and 5 million merchants, processing over $20 billion yearly. But just three years ago, in 2019, PicPay was 30 engineers in a small office working on a single product for a few million users. Growing our product portfolio, team size, and the number of transactions by several orders of magnitude so quickly was as chaotic as you might imagine—but we've done it! Our approach gave teams and engineers radical autonomy to choose the best tool, process, and technology for their area. This strategy was invaluable in handling hypergrowth, but as we stabilize as a business and product, we have realized that what took us here isn't what will keep us moving forward. In this talk, let's explore the consequences of how we dealt with our hypergrowth phase and what are the changes and initiatives we have put in place to make sure that we keep growing and pushing the envelope—but at a manageable pace this time around. Phil Calçado is the Global CTO at PicPay. Before PicPay, Phil was Senior Director of Engineering at SeatGeek, leading the team that built the live events platform used by 44 million people worldwide. He has also led the platform team at Meetup/WeWork, worked on Linkerd - the pioneering Service Mesh, and headed product engineering for DigitalOcean and SoundCloud, both pioneers in adopting Microservices architectures. https://plus.qconferences.com/plus2022/presentation/afterparty-refactoring-after-100x-hypergrowth

don't try this at home: self-improvement as a senior leader

Phil Calçado

Presented at LeadingEng New York 2022 (https://leaddev.com/leadingeng-new-york/video/dont-try-home-how-practice-self-improvement-senior-leader) -- Most of us have developed our expertise as engineers through a mix of literature and experimentation. The software industry moves at a higher speed than others because we can try and study complex, real-world systems in the comfort of our bedrooms and personal Github accounts. When you become a leader, especially one who leads other leaders, things get a little more complicated. There are books, but they tend to contain generic advice. There are patterns, but the nature of the job makes it harder to identify when and how to apply them. In this session, I want to walk through a few things that have worked for me when you don't have a lab to try things out. Let's explore processes, tools, and resources to continuously improve your skills and expertise when there is no StackOverflow and no coding dojos. Phil Calçado is Global CTO at PicPay, the largest digital wallet in Latin America. He leads a team of more than 1,500 engineers building financial products for 60 million users and processing over four billion dollars yearly. Before PicPay, Phil was Senior Director of Engineering at SeatGeek, where he led the team that built the live events platform used by 44 million people worldwide. He also has led the platform team at Meetup/WeWork, worked on Linkerd - the pioneering Service Mesh, and headed product engineering for DigitalOcean and SoundCloud, both pioneers in the adoption of Microservices architectures.

The Economics of Microservices (redux)

Phil Calçado

From microservices to serverless - Chicago CTO Summit 2019

Phil Calçado

For the last ten years or so, many companies have focused on migrating from larger, monolithic systems and applications towards a specific style of Service-Oriented Architecture called Microservices. The promise was that these smaller, loosely-coupled, and independently developed components would increase productivity and safety for organizations, as large and complex business challenges can be broken down into smaller and simpler components. However, even before most organizations were able to fully migrate to this new architecture and enjoy its promised benefits, a new iteration of cloud computing has been made available in the shape of Serverless platforms such as AWS Lambda, and Google Cloud and Microsoft Azure Functions. Now lots of companies found themselves conflicted between abandoning their traditional microservices approach towards Serverless, often even before they have fully migrated to it from the legacy systems. After leading successful Microservices adoption at SoundCloud and DigitalOcean, recently at Meetup I have faced the challenge of pivoting from a traditional monolith-to-microservices migration to a cloud-native platform. In this talk, let's discuss the fundamental concepts, technologies, and practices behind Microservices and Serverless, and how a software architect used to distributed systems based on microservices needs to change their mindset and approach when adopting Serverless.

Ten Years of Failing Microservices

Phil Calçado

The Next Generation of Microservices

Phil Calçado

How are microservices in 2017 different from how we used to build them at the beginning of the decade? More traditional Service-Oriented Architectures were defined by protocols and standards published and curated by industry consortiums. Knowledge of the architectural style usually called "microservices", on the other hand, is often in the form of patterns, cautionary tales, and tools extracted from real-world reports and software made available by organisations that have adopted this style. Almost ten years since the first wave of such reports, the landscape has changed considerably. Many hard challenges from the past have been eased or completely solved, and a lot of the custom software created by the microservices pioneers have been made off-the-shelf open source software. In this talk, Phil Calçado will contrast what we first found in the first generation of microservices architectures against the current generation's landscape. Let's talk about which previous common knowledge and patterns are deprecated, which ones are still active, and introduce some of the ones that have been recently added to our toolbox.

The Next Generation of Microservices — YOW 2017 Brisbane

Phil Calçado

The Economics of Microservices (2017 CraftConf)

Phil Calçado

Finagle @ SoundCloud

Phil Calçado

A Brief Talk On High-Performing Organisations

Phil Calçado

Three Years of Microservices at SoundCloud - Distributed Matters Berlin 2015

Phil Calçado

SoundCloud is the largest repository of audio on the web, used by more than 200 million people every month, who upload more than 11 hours of audio every minute. Like so many others, we have migrated from a typical monolithic architecture to microservices. While the benefits brought by this style of SOA to our productivity and reliability are clear, the architecture required some non-obvious changes in the way we operate systems, and a way to tackle the overhead associated with having hundreds of small moving parts to serve every request. In this talk we’ll share the toolkit and strategy SoundCloud uses to keep its microservices explosion manageable. What do we do about the operations overhead? How to spread devops skills across teams to support the “you build it, you run it” vision? How to deal with breaking changes and asynchronous behaviours? How to deal with chatty interactions? Which protocol? How do I even get a diagram telling me how all this stuff is put together?

Rhein-Main Scala Enthusiasts — Your microservice as a Function

Phil Calçado

ScalaItaly 2015 - Your Microservice as a Function

Phil Calçado

SoundCloud's microservice architecture is built mostly in Scala, using Finagle as its distributed systems workhorse. Finagle is an RPC system for the JVM, and it is based on a pipes-and-filters architecture that maps very nicely to functional programming concepts of higher-order functions and combinators. Over the past few years we have found that it is extremely useful to go even a step further and think of microservices as functions themselves. In this talk let's explore how SoundCloud uses Scala and Finagle, and how we started thinking of a microservices architecture as a special case of a functional system.

An example of Future composition in a real appPhil Calçado

APIs: The Problems with Eating your Own Dog Food

Phil Calçado

SoundCloud's web and mobile properties are all built on top of our Public API. While building the user-interface atop a RESTful layer has proven itself a sound decision, the one-size-fits-all nature of a Public API is not ideal. When it comes to data transfer and HTTP resource modelling, each client has their own needs, and in the end hacks and workarounds have to be implemented in both clients and servers. Feature development also becomes complicated, with coordination between multiple teams required for every single little feature. SoundCloud is now moving to a different model, where clients have their own façade APIs, modelled after their core characteristics and needs. We are also using the architecture to break away from Conway’s Law and building more cross-functional, end-to-end teams. From: http://gotocon.com/berlin-2013/presentation/APIs:%20The%20Problems%20with%20Eating%20your%20Own%20Dog%20food To implement this, a lot of change in our architecture, tech stack and development processes were required. In this talk we will explore the challenges we had, the options we investigated and how ultimately SoundCloud decided to move forward.

Evolutionary Architecture at WorkPhil Calçado

Structuring apps in ScalaPhil Calçado

From a monolithic Ruby on Rails app to the JVMPhil Calçado

Applying Evolutionary Architecture on a Popular APIPhil Calçado

SoundCloud Masterclass on BrazilPhil Calçado

SpeakerConf: my findings in trying to use this functional programming busines...Phil Calçado

[GOTO Copenhagen 2012] The Startup Hangover: Supporting 15 mil UsersPhil Calçado

(v2.0) Better Functional Design Through Test-Driven Development

Phil Calçado

When writing Object-Oriented software these days, few developers doubt the benefits of TDD. The Software Craftsmanship movement even goes one step further, and says that it is just plain irresponsible to write software without this tool. More and more projects are using Functional programming languages, though, and TDD is not so common in this side of the software development world. Maybe TDD doesn’t make sense outside Object-Oriented software? After experimenting with the TDD mindset and Functional languages in real-world projects, my experience is that those also benefit a lot from using tests as design aid. In this talk, let’s investigate what is generally accepted as good practices in Functional Programming and how to use TDD to take us there, with examples in Clojure.

Elevating Tactical DDD Patterns Through Object Calisthenics

Dorra BARTAGUIZ

After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!

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Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap. The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies. Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques What will you get from this session? 1. Insights into SAP testing best practices 2. Heatmap utilization for testing 3. Optimization of testing processes 4. Demo Topics covered: Execution from the test manager Orchestrator execution result Defect reporting SAP heatmap example with demo Speaker: Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP

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Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes? All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.

GraphRAG is All You need? LLM & Knowledge Graph

Guy Korland

Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs. 1. Unifying Large Language Models and Knowledge Graphs: A Roadmap. https://arxiv.org/abs/2306.08302 2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs: https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/

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In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development. This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.

Epistemic Interaction - tuning interfaces to provide information for AI support

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Welocme to ViralQR, your best QR code generator.

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(In Portuguese) Seu produto é um sucesso, e agora? desafios técnicos que uma start-up enfrenta -

1. Seu produto é um sucesso, e agora? desaﬁos técnicos que uma start-up enfrenta Phil Calçado - SoundCloud @pcalcado http://philcalcado.com Thursday, February 16, 12

2. ôpa! meu nome é phillip. Thursday, February 16, 12

3. eu trabalho aqui: Thursday, February 16, 12

4. Thursday, February 16, 12

5. e você deveria ir pra lá também. Thursday, February 16, 12

6. http://bit.ly/work-at-soundcloud Thursday, February 16, 12

7. as pessoas desenvolvem sistemas de maneiras bem diferentes hoje em dia. Thursday, February 16, 12

8. “Engenharia de Software” (i.e. waterfall) Thursday, February 16, 12

9. Thursday, February 16, 12

10. feedback Thursday, February 16, 12

11. Agile Típico Thursday, February 16, 12

12. Thursday, February 16, 12

13. feedback Thursday, February 16, 12

14. Startup (i.e. “Eu não tenho a menor idéia se esse troço vai vingar...”) Thursday, February 16, 12

15. Thursday, February 16, 12

16. feedback Thursday, February 16, 12

17. experimentação rápida. Thursday, February 16, 12

18. mas e o sistema, como ﬁca? Thursday, February 16, 12

19. sound.erb SoundController view upload Sound Database Thursday, February 16, 12

20. sound.erb sound.json.erb SoundController SoundApiController view view upload upload Sound Database Thursday, February 16, 12

21. sound.erb sound.json.erb UploadController SoundController SoundApiController upload view view upload S3 Sound Database Thursday, February 16, 12

22. Cache sound.erb sound.json.erb UploadController SoundController SoundApiController upload view view upload S3 Sound Database Cache Thursday, February 16, 12

23. Cache sound.erb sound.json.erb UploadController SoundController SoundApiController upload view view upload S3 Database Database Database 1 2 N Sound Cache Master/Slave Thursday, February 16, 12

24. startups Thursday, February 16, 12

25. startups A grande maioria falha Thursday, February 16, 12

26. startups A grande maioria falha, fazer é mais importante que planejar Thursday, February 16, 12

27. startups A grande maioria falha, mas algumas dão certo. Thursday, February 16, 12

28. Após esta corrida dos 100m rasos, como recuperar o fôlego? Thursday, February 16, 12

29. 1) Não padronize, encoraje 2) Não re-comece do zero 3) Quebre o monolito Thursday, February 16, 12

30. 1) Não padronize, encoraje Thursday, February 16, 12

31. 1) Não padronize, encoraje Thursday, February 16, 12

32. 1) Não padronize, encoraje Thursday, February 16, 12

33. 1) Não padronize, encoraje Thursday, February 16, 12

34. 1) Não padronize, encoraje Thursday, February 16, 12

35. 1) Não padronize, encoraje Thursday, February 16, 12

36. 1) Não padronize, encoraje Thursday, February 16, 12

37. 1) Não padronize, encoraje Thursday, February 16, 12

38. 1) Não padronize, encoraje Thursday, February 16, 12

39. 2) Não re-comece do zero Thursday, February 16, 12

40. 2) Não re-comece do zero App 1 Vídeo Música App 2 Banco de Dados Data de Matéria Aniversário "O Framework" App N Thursday, February 16, 12

41. 2) Não re-comece do zero Vídeo Música Banco de Música Dados OBM* Data de Matéria Aniversário Vídeo "O Framework" App N+1 * OBM: Object-to-Bolovo Mapper Thursday, February 16, 12

42. 3) Quebre o monolito Thursday, February 16, 12

43. 3) Quebre o monolito Thursday, February 16, 12

44. 3) Quebre o monolito Thursday, February 16, 12

45. 3) Quebre o monolito VídeoController MúsicaController Vídeo Música Data de Matéria Aniversário Thursday, February 16, 12

46. 3) Quebre o monolito VídeoController MúsicaController Vídeo Música Matéria Data de Aniversário Thursday, February 16, 12

47. 3) Quebre o monolito VídeoController MúsicaController MúsicaService Vídeo Música Matéria Data de VídeoService Aniversário Thursday, February 16, 12

48. 3) Quebre o monolito Matéria <<interface>> MúsicaController Vídeo Música Data de Aniversário VídeoController <<interface>> VídeoService MúsicaService Thursday, February 16, 12

49. Lembre-se: Thursday, February 16, 12

50. Thursday, February 16, 12

51. Thursday, February 16, 12

52. Problemas ﬁnanceiros são resolvidos com dinheiro. Thursday, February 16, 12

53. Problemas ﬁnanceiros são resolvidos com dinheiro. Problemas técnicos requerem dinheiro e tempo. Thursday, February 16, 12

54. http://bit.ly/work-at-soundcloud Thursday, February 16, 12

(In Portuguese) Seu produto é um sucesso, e agora? desafios técnicos que uma start-up enfrenta -

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(In Portuguese) Seu produto é um sucesso, e agora? desafios técnicos que uma start-up enfrenta -