Mastering SQLite Write-Ahead Logging (WAL): Use Cases, Best Practices, and Performance Benchmarks By default, SQLite uses a rollback journal mode to ensure atomicity, consistency, isolation, and durability (ACID) compliance. However, SQLite offers an alternative journaling mode called Write-Ahead Logging (WAL), which dramatically improves write performance and allows concurrent read and write operations. In this post, we’ll dive deep into SQLite’s WAL mode, explaining how it works, when to use it, and its pros and cons....