Redis Query Engine Guidance for using the Redis Query Engine (RQE) to index and search Hash or JSON documents. Covers schema design with , field-type choices, query syntax, index lifecycle management, and the most common performance pitfalls. When to apply - Creating, modifying, or reviewing an RQE index ( , ). - Writing or optimizing / queries. - Deciding between , , , , , or for a field. - Rolling out a new index schema without downtime. - Spinning up an index that should only cover newly written keys. 1. Use DIALECT 2 (the modern default) is the baseline. Other dialects (1, 3, 4) are depre…