One aspect of programming that’s more art-than-science is making things efficient. I love finding shortcuts that make a system work better! It’s particularly satisfying to gather insights that we can exploit! I’ll illustrate with an example. Optimal for TodayHttpUrl is a class I wrote that implements URL…
This post expands on a section in my Writing Code That Lasts Forever talk. Here's what it takes to release a new version of OkHttp: Confirm the code is in a releasable state!Name the version (5.0.0-alpha.10 ?, ick)Summarize what’s new in the changelogTag the release…
Let’s make a fictional company that employs workers in two levels: Senior worker: does important work; gets paid $50/hour.Principal worker: trusted with the most important work; gets paid $100/hour.Unfortunately, it’s difficult to differentiate the two levels! If a project completes early it might because…
I presented Nerding Out on Okio at Android Worldwide last month. After sharing the video link and slide deck, Andrew Kelly tweeted asking if I’d share my process. I’m flattered by the question! So here I’ll indulge and share what works for me. The gist of my…
In 2013 I opened OkHttp Issue #270, ‘Analytics API’. The request was to just add some debug logging: We should add verbose logging for the response cache. Folks occasionally are puzzled when the cache doesn't work. Let's make it easy for them to figure out why.We didn’t add…
I’ve been working on OkHttp’s Happy Eyeballs and exploring testing strategies along the way. Happy Eyeballs is the fun name of RFC 6555, which is a clever hack to deploy IPv6 even if some client’s IPv6 connectivity is unstable. Here’s how it works: A client has…
Gradle has powerful features to check signatures of downloaded artifacts. If you want to check that things are signed right, that’s the best place to start. But if you wanna verify an artifact’s signature manually, here’s how... Find the signer’s keyThere’s a bunch of key…
Every so often an exasperated teammate recommends enabling -Werror in all our repos. The reasoning is sound: Compiler warnings are bad.Having lots of them is demoralizing.If we had prevented them from ever occurring we wouldn’t be in this mess.This is a particularly good policy to prevent…