https://redb.org/ Recent content on redb Hugo en-us Fri, 16 Jun 2023 00:00:01 +0000 https://redb.org/post/2023/06/16/1-0-stable-release/ Fri, 16 Jun 2023 00:00:01 +0000 https://redb.org/post/2023/06/16/1-0-stable-release/ redb is stable! Link to heading redb is an embedded key-value database written in pure Rust. It provides a similar interface to other embedded key-value stores such as rocksdb and lmdb, and it has comparable performance while still being memory-safe. Besides the table stakes features such as zero-copy reads and MVCC to allow multiple concurrent readers, redb provides a few other notable features: ACID transaction semantics with configurable durability per transaction: transactions may be configured to be non-durable which improves commit performance without sacrificing atomicity, consistency, or isolation. https://redb.org/post/2022/07/26/faster-commits-with-1pcc-instead-of-2pc/ Tue, 26 Jul 2022 00:00:01 +0000 https://redb.org/post/2022/07/26/faster-commits-with-1pcc-instead-of-2pc/ Introduction Link to heading redb is an embedded key-value database, and committing data and ensuring its durability is paramount. Up until version 0.4.0, it used the classic 2-phase commit (2PC) strategy in all cases. Version 0.4.0 adds a 1-phase commit with checksum (1PC+C) approach that reduces latency by 2x, making redb faster than, the well-known, lmdb for point insertions and other use cases with small transactions. 2-phase commit Link to heading 2-phase commit involves writing all the data, performing an fsync to ensure it is durably stored, then toggling a metadata flag to promote that data to be visible to future transactions, and finally performing a second fsync.