Advent of Go Microservices
Advent of Go Microservices
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Advent of Go Microservices

Last updated on 2020-02-17

About the Book

Are you stuck writing boilerplate code for your microservice?

The book takes you on a 24 chapter adventure where you'll learn how to get rid of the chore work that is keeping you from actually writing your microservices. We'll resort to automation for taking care of your data structures, SQL migrations, API endpoints and routing, updating your documentation, along with CI and monitoring - all the things you need, but at the same time don't need to do by hand.

About the Author

Tit Petric
Tit Petric

I'm a seasoned veteran of software engineering. Interested in performance optimization and problem solving. High traffic, high availability, virtualization, docker - these are the categories in which I live.

Table of Contents

  • Introduction
    • About me
    • Who is this book for?
    • How should I study it?
  • Requirements
    • Linux and Docker
  • Go: Introduction to Protobuf: Messages
    • Protobufs and Go
    • Generating Protobuf Go code
    • Wrapping up
  • Go: Introduction to Protobuf: Services
    • Protobuf service definitions
    • Our microservice
    • Twitch RPC scaffolding
  • Go: Introduction to Protobuf: gRPC
    • Generating the gRPC scaffolding
    • Comparing the server side
    • Comparing the client side
  • Make: Dynamic Makefile targets
    • Building multiple targets with Go
    • Dynamic Makefile target for building RPC/Protobuf files
    • Building our services from cmd/
  • Bash: Poor mans code generation
    • Generating our service cmd/ folders
    • Generating the client for our service
    • Server implementation
  • Bash: Embedding files into Go
    • Planning database migrations
    • Poor mans file embedding
  • Go: Scaffolding database migrations
    • The migration API
  • Drone CI: Testing database migrations
    • Configuring Drone CI for database integration tests
  • Go: Database first struct generation
    • Database schema data structures and helpers
    • Querying information schema
    • Type conversions
    • Moving forward
  • Go: Generating database schema documentation
    • Updating the Go generators
    • Implementing a markdown output renderer
    • A caveat emptor about database migrations
  • Go: Dependency injection with Wire
    • The Go way
    • Runtime vs. compile time
    • Wire and dependency providers
    • Wire and dependency Injector
  • Docker: Building images with security in mind
    • Configuring Makefile targets
    • The basic Dockerfile image
    • Security implications of our docker image
    • Possible improvements
  • Go: implementing a microservice
    • The database schema
    • Improving the microservice environment
    • Implementing Push
  • Docker/Bash: Issuing requests against our microservice
    • The docker-compose file
    • Our first request
  • Go: Improving our database handling
    • Data source name - DSN
    • Multiple database connections
    • Updating database connections
    • Database connection retry
    • Migration improvements
    • Re-testing the bundled migrations
  • Go: Instrumenting the HTTP service with Elastic APM
    • Wrapping our existing handler
    • Logging errors too
    • Setting up ELK
    • Setting up APM
    • Configuring our sender
    • Reviewing ELK data
  • Go: Instrumenting the Database client with Elastic APM
    • Extending DB connection
    • Verifying it’s working
  • Go: Stress testing our service
    • Setting up our stress test
    • Resolving detected errors
    • Removing context cancellation
    • Wrapping up
  • Go: Background jobs
    • Adding background jobs to our service
    • Do we really need Init?
    • The background job
    • Housekeeping
    • Verifying everything works
  • Go: Optimizing requests with a queue
    • The Queue
    • The Producer
    • The Consumer
    • Benchmarking
    • Notes and pitfalls

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