Garbage Collection in Git

To understand git garbage collector, we need to understand how branches work. Branches are just pointers to commits that move whenever a new commit is created.

The future of latency profiling in Go

Note: This article contains non-finalized ideas; we may end up not implementing any of this but ideally we should do work towards the direction explained here. Go is the language to write servers, Go is the language to write microservices. Yet, we haven’t done much in the p...

Go's work-stealing scheduler

Go scheduler’s job is to distribute runnable goroutines over multiple worker OS threads that runs on one or more processors. In multi-threaded computation, two paradigms have emerged in scheduling: work sharing and work stealing. Work-sharing: When a processor generates new...

Interface Semantics

Prelude If you want to put this post in some better context, I suggest reading the following series of posts, which lay out some other fundamental and relevant design principles: Language Mechanics On Stacks And Pointers Language Mechanics On Escape Analysis Language Mechanics O...

Chunking large messages with gRPC

One of the gotchas of using gRPC is that it was not designed to transport large messages in one chunk. The default max message size is slightly arbitrarily set at 4MB today, and while it is possible to configure, that kind of behaviour might lead to a slippery slope scenario of e...

Throttling resource intensive requests

Sometimes when you’re writing a server, you’ve got a function that consumes a lot of memory while running, or some other resource, and you might be worrying that a sudden burst of requests could crash the server, since gRPC by default will just spawn another goroutine...

What I Learned From Hacking Video Games

GopherJS Integration Tests

Recently I found myself wondering how I was going to test my new GopherJS gRPC-Web bindings. Writing tests was something I had been waiting with until I had something working, mostly because I had no idea how I was going to meaningfully test GopherJS code that relies on interacti...

Using different Git emails

Usually at work and at home we use different Git name/email pairs, or even per project. Pushing with correct email guarantees that your commits will be authored with a correct user identity.

Profiler labels in Go

Go 1.9 is introducing profiler labels, a way to add arbitrary key-values to the samples collected by the CPU profiler. CPU profilers collect and output hot spots where the CPU spent most time in when executing. A typical CPU profiler output is primarily reports the location of th...