Tag

Redis

2 posts tagged “Redis”.

Why migrate to Valkey if Redis is open source again?

Redis re-added an OSI-approved license in May 2025, so why move off KeyDB to Valkey instead of Redis? Because 'open source again' is a license one company added and can route around next time, Valkey's structure has no mechanism to re-close, your RESP clients already work today, and the native-client story runs on AWS's and Google's payroll.

Kristiyan Ivanov•October 8, 2026

How Slow DNS Puts Valkey Sentinel Into TILT

A team running BetterDB reported a Valkey Sentinel deployment that kept logging +tilt and flagging +sdown on healthy nodes, with raw IPs and plaintext as the only known workaround. This is the reproduction and the isolation matrix: a blocking getaddrinfo on Sentinel's single-threaded loop is the cause, TLS is not, and an FQDN in announce-ip stalls the peer Sentinels rather than the one that announced it. Verified on Valkey 8.1.8 and 9.0.6.

Kristiyan Ivanov•September 25, 2026