Redis Deep Dive: Data Structures, Persistence, Performance, and Operational Patterns#
Redis is an in-memory data store, but calling it a “cache” undersells what it can do. It is a data structure server that happens to be extraordinarily fast. Understanding its data structures, persistence model, and operational characteristics determines whether Redis becomes a reliable part of your architecture or a source of mysterious production incidents.
Data Structures Beyond Key-Value#
Redis supports far more than simple string key-value pairs. Each data structure has specific use cases where it outperforms alternatives.