RedisTimeSeries is a Redis module designed for building applications with time-series data. It allows developers to store, analyze, and visualize time-series data in a unified log architecture and for interprocess messaging. The module uses chunks as the underlying storage mechanism, which consist of two correlated arrays (one for timestamps and one for sample values) in a doubly linked list. RedisTimeSeries provides various commands such as TS.CREATE, TS.ADD, TS.RANGE, TS.INCRBY, TS.DECRBY, TS.GET, and TS.ALTER to manage time-series data. It also supports aggregation functions like averages, sums, minimums, maximums, counts, and ranges. Additionally, RedisTimeSeries can be used to cache time-series data that would otherwise be stored in a slower database, providing benefits such as improved performance and scalability.