redis

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'''[http://redis.io/%|%Redis]''', by [SS], is an in-memory data structure store.


** Attributes **

&| Website        | http://redis.io                  |&&| Repository     | https://github.com/antirezdis/redis   |&
&| Latest release | 6.0.8                            |&
&| Release time   | 2020-09-10                       |&&| License        | BSD (3-clause).                  |&
&| Maintainer     | The Redis core team.             |&

[SS] http://antirez.com/news/133%|%stepped down%|%  as the maintainer of Redis in June 2020.


** See Also **
   [StarStore]:   A Redis-like API for [Metakit].


** Description **
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 https://github.com/antirez/redis/blob/unstable/tests/support/redis.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 https://gist.github.com/antirez/6ca04dd191bdb82aad9fb241013e88a8%|%Gist%|% on [GitHub].


** Retcl **

[https://github.com/gahr/retcl%|%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.


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