Redis 8.8 performance improvements: Faster MGET, MSET, streams, & more

Redis 8.8 offers notable performance enhancements, particularly in high-traffic commands like MGET, MSET, HGETALL, and the SCAN family, while also improving streams, sorted sets, bitmaps, and persistence and replication paths. These improvements are measured against Redis 8.6, with significant gains in throughput across various workloads and hardware platforms, such as up to 68% faster for MGET in pipelined deployments and up to 83% for large XREADGROUP operations. Enhancements include a memory prefetch framework for multi-key bulk reads, optimized hashing and scanning operations, and a rewritten radix tree for faster stream access. Additionally, Redis 8.8 reduces operational costs in persistence and replication by optimizing diskless full syncs and lowering BGSAVE overhead, with overall improvements in replication efficiency. These updates are available in Redis 8.8 open source, allowing users to integrate these optimizations into their existing workflows.

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