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…
I’ve worked on teams that use many repositories and teams that put everything into a giant monorepo. But no matter how much code we jam into git, there’s always something else on the outside. Gradle’s includeBuild() feature smashes multiple projects together into one. Recently I used it…
As discussed previously, I’m working on a file system API for Okio. I’ve already written real & testing implementations, and now I’m adding ZipFileSystem: it views a zip archive as a read-only file system. Most of the work is reading specs, writing tests, and learning the gotchas…
Sometimes multiple threads close the same Socket concurrently. Unfortunately, Android 10 and 11 may crash when this happens: java.lang.NullPointerException: bio == null at com.android.org.conscrypt.NativeCrypto.SSL_pending_written_bytes_in_BIO() at com.android.org.conscrypt.NativeSsl$BioWrapper.getPendingWrittenBytes() at com.android.org.conscrypt.ConscryptEngine.pendingOutboundEncryptedBytes(…
I’m working on Okio’s multiplatform filesystem API. It introduces 3 main types: Path: a value object that identifies a file or directoryFileMetadata: a value object that describes a file or directory, including its type and sizeFilesystem: a service object to read and write files and directories Plus two…
Though Okio has been multiplatform for a year, it still lacks support for reading & writing files. I’ve been thinking about what application developers need and what APIs we should build. But the more I consider it, the more I think, ‘fuck, filesystems are awful’. Files as UIComputing used…
Writing sturdy software is hard work. Sometimes it’s very hard work, but it doesn’t need to be. Very Hard Problem: ORMI have a confession: I like Hibernate. The @Version feature is my favorite; it makes optimistic locking easy and safe. I also like how simple it is to…
Let’s copy a file with bad Java I/O: private void copy(File source, File target) throws IOException { try (InputStream in = new FileInputStream(source); OutputStream out = new FileOutputStream(target)) { while (true) { int b = in.read(); if (b == -1) break; out.write(b); } } } Whoops, it’s super slow. Reading a…