I Love You, Redis, But I’m Leaving You for SolidQueue

Rails 8 introduces SolidQueue, SolidCache, and SolidCable as PostgreSQL-based replacements for Redis in the default stack. SolidQueue leverages PostgreSQL's FOR UPDATE SKIP LOCKED feature to handle job queuing without lock contention, eliminating the operational complexity of maintaining Redis infrastructure. The article provides a complete migration guide from Sidekiq to SolidQueue, including setup instructions, recurring job configuration, and Mission Control monitoring. While Redis remains necessary for high-throughput applications processing thousands of jobs per second, SolidQueue handles 200-300 jobs/second and is sufficient for most Rails applications, as demonstrated by 37signals processing 20 million jobs daily on PostgreSQL.