Jean Barkhuysen

Posts

Aug 8, 2026ai infrastructure
Reproducible, AI-driven large scale changes
Making AI-driven large scale code changes deterministic, cheap, and auditable.
May 6, 2026infrastructure
Queues in Postgres
Building a distributed priority queue on Postgres.
Oct 23, 2025design
Inlining function code
When to inline code and when to extract it.
Oct 17, 2025jj tooling
A jj script to lint your entire graph
A small script that walks every mutable rev in the jj graph and lints as it goes.
Oct 6, 2025jj tooling
A jj plugin for bash-it
A bash-it plugin that surfaces jj repository state in your shell prompt.
Jun 10, 2025protobuf modules
Storing protobuf-generated Go code without a registry
Where to store protobuf-generated Go code without the buf BSR.
Jun 10, 2025protobuf
Generating protobuf-generated Go code without a registry
Generating Go code from protobufs without the buf BSR.
Feb 26, 2025testing
Spock gripes
Gripes with Spock and the Groovy test framework.
Jan 29, 2025go tooling
Running your own pkgsite
Running pkgsite yourself against a private enterprise GitHub and goproxy.
Dec 7, 2022career
Engineering resources from Google
A collection of Google's public engineering resources.
Dec 5, 2022go
Interfaces in depth
A deep dive into Go interfaces.
May 5, 2022infrastructure
Graceful degradation with the logistic function
Using the logistic function to shed load gradually.
Feb 9, 2022errors go
Wrapped errors are stacks
Wrapped errors form a stack.
Feb 8, 2022errors go
Error unwrapping for library authors
Go's Unwrap is part of your library's API.
Feb 8, 2022testing go
Complex assertions
Keeping assertions on large, nested structures readable and maintainable.
Feb 8, 2022testing go
testing in Go
A case for testing Go with Go's testing.
Feb 24, 2021go crosspost
Contexts and Structs
Why context.Context belongs in a function argument rather than a struct field.
Oct 8, 2020testing go
Stubbing gRPC clients in Go tests
Stubbing gRPC clients in Go tests.
Jul 7, 2020modules crosspost
Keeping Your Modules Compatible
Evolving a Go module's API without breaking the compatibility promise.
Nov 23, 2019algorithms
Binary Search Tree Runtime Complexities
Building intuition for binary search tree complexities.
Nov 7, 2019modules crosspost
Go Modules: v2 and Beyond
Releasing v2 and beyond of a Go module without breaking the people using it.
Nov 5, 2019tooling
Docker in Docker
What people actually mean by docker-in-docker.
Oct 23, 2019go
Bad Times Initializing With Append
Initializing a variable can be a bad idea.
Sep 1, 2019career
Reflecting on two years at Google
Two years at Google.
Sep 1, 2019career
Reflecting on interviewing at Google
Interviewing at Google.
Aug 21, 2019modules crosspost
Migrating to Go Modules
Moving an existing project off GOPATH and onto Go modules.
Jun 8, 2019go
Designing CRUD operations in Go
The design considerations that go into adding CRUD operations to a Go client library.
Apr 23, 2019modules crosspost
Resolving Problems From Modified Module Path
Recovering when a module's path changes out from under its dependents.
Feb 25, 2019modules crosspost
Multi-Module Repositories
When to put multiple Go modules in a single repository.
Aug 20, 2018protocols crosspost
gRPC on HTTP/2: Engineering a Robust, High Performance Protocol
Why gRPC is built on HTTP/2, and the protocol design decisions that make it robust.
Jul 21, 2018protocols crosspost
HTTP/2: Smarter At Scale
How HTTP/2's multiplexing, header compression, and flow control behave under real load.
Mar 3, 2018protocols crosspost
Which protocol should I use?
Weighing REST, gRPC, and friends, and when each one is the right fit.