Blog / Go Language Spec

100 episodes of Cup o' Go!

February 14, 2025

Yesterday, Shay Nehmad and I, and close to 20 other people, recorded the 100th episode of the Cup o’ Go podcast. It’s been just over two years since the first episode came out, and in that time we’ve made some good friends, and built a bit of a community.

If you haven’t listened yet, I invite you to listen to the replay of the live episode, which is also about celebrating the newly released Go 1.24.

Listen, or read the transcript.

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Context cancelation

As already mentioned, the context.Context type serves two purposes: It manages cancelation signals, and it allows passing request-scoped data. In my opinion, these two purposes are distinct enough that they probably should be handled by two separate mechanisms. But alas, that’s not what we have. However, I think it’s still useful to think of the two uses as distinct. Most often (at least in a well-designed application), the primary purpose of a context is the propegation of cancelation signals.

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Monday we looked at a very high-level view of what problems the context package is meant to solve. Namely, to propagate cancelation signales and/or request-scoped values through the call stack of an application. Today we’ll take a brief look at how context “plumbing” works—and answer they why of all those mysterious context.Context function parameters you’ve probably seen, being passed around more than a virus in a daycare. Overview … Incoming requests to a server should create a Context, and outgoing calls to servers should accept a Context.

context

Hey! My apologies for being absent for the last few weeks. I’ve been incredibly busy closing on a new house and moving. We’re still settling, but it’s time to start this up again. So today I’m starting a short series on context! Specifically, I’ll be going through the context package in the standard library, explaining what it does, and offering my advice, much like I went through the Go spec in the past.

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