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Redis 8.4 continues our mission to make Redis faster, simpler, and more powerful, with major upgrades to performance and the dev experience, as well as new hybrid search capabilities that make building AI apps faster and easier.

New features in 8.4 include:

• Hybrid search: Combines full-text and vector results in one query, supporting more accurate AI, RAG, and semantic search experiences.
• Performance improvements: With multi-threaded I/O, improved memory handling, and smarter JSON storage that deliver over 30% higher throughput and up to 91% lower memory use.
• Atomic slot migration (ASM): Makes cluster scaling easier and more reliable.
• Stream enhancements: Allow clients to process new and pending messages in a single step.
• Atomic key operations: Provide safer, script-free key updates and expirations.

Manvinder Singh, our VP of AI Product Management, says AI agents are hitting a real inflection point. Today’s breakthroughs won’t come from bigger models. They’ll come from memory: how well agentic systems keep context, retrieve it fast, and use it when it matters.

Memory is what matters most for agents now. The next leap forward will not come solely from larger models or faster inference. It will come from agents that can remember, reason adapt over time.