Version 11 of redis

Updated 2020-09-19 20:29:51 by dbohdan

Redis , by SS, is an in-memory data structure store.


Latest release 6.0.8
Release time 2020-09-10
License BSD (3-clause).
Maintainer The Redis core team.

SS stepped down as the maintainer of Redis in June 2020.

See Also

A Redis-like API for Metakit.


Redis is an in-memory data structure store that persists on disk. The data model is key-value, but many different kinds of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes. It is somewhat like Memcached, but persistent.

Redis is implemented in C with a test suite written in Tcl. The test suite includes a Tcl client library .

The first version of Redis, then called "LMDB" (unrelated to LMDB), was itself implemented in Tcl. SS has published its source code as a Gist on GitHub.


Retcl is an event-driven, object-oriented, Redis client library targeting the Tcl scripting language.

Things that Retcl does which are missing in Salvatore's client are:

  • Pub/Sub support
  • Callbacks specified per subscription pattern / channel
  • Configurable results cache
  • Global and per-command sync / async modes
  • User-defined error handler

Redis and Jim Tcl

You can find a basic Redis client library for Jim Tcl (which was originally another project of antirez) in jimhttp. The library also works in Tcl 8.6 or later.