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…
I’ve been working on a file system API for Kotlin Multiplatform. It’s simple & fast and I’m excited about it. We’ve got these: FileSystem.SYSTEM: the local file system.FakeFileSystem: our in-memory implementation. Use checkNoOpenFiles() to be confident that your code doesn’t leak!ForwardingFileSystem: like…
I’ve been working on a product that’s grown from 5 developers in 2013 to 400 developers today. Our product complexity and customer numbers have grown similarly. I’m lucky and thankful to have been on a team whose hard work has paid off so much. But I’m…
All systems have limits. If I don’t design for them that doesn’t make them disappear! It just means I’ll be unprepared when they’re reached. Most of the systems I work on accept HTTP requests, perform operations on databases to satisfy them, and format their responses. Though…