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Redis

For other uses, see Redis (disambiguation).
Redis
Original author(s)Salvatore Sanfilippo[1][2]
Developer(s)Redis[1][2]
Initial releaseFebruary 26, 2009 (2009-02-26)[3]
Stable release
8.0.0[4] Edit this on Wikidata / May 2, 2025 (May 2, 2025)
Repository
Written inC
Operating systemUnix-like[5]
Available inEnglish
TypeData structure store, key–value database
LicenseRedis Source Available License, SSPL[6] or AGPL[7]
Websiteredis.io Edit this on Wikidata

Redis (/ˈrɛdɪs/;[8][9] Remote Dictionary Server)[8] is an in-memory key–value database, used as a distributed cache and message broker, with optional durability.[10] Because it holds all data in memory and because of its design, Redis offers low-latency reads and writes, making it particularly suitable for use cases that require a cache. Redis is the most popular NoSQL database,[11][12][13] and one of the most popular databases overall.[14]

The project was developed and maintained by Salvatore Sanfilippo, starting in 2009.[15] From 2015 until 2020, he led a project core team sponsored by Redis Ltd.[16] Salvatore Sanfilippo left Redis as the maintainer in 2020.[17] In 2021 Redis Labs dropped the Labs from its name and now is known simply as "Redis".[18]

In 2018, some modules for Redis adopted a modified Apache 2.0 with a Commons Clause.[19] In 2024, the main Redis code switched from the open-source BSD-3 license to being dual-licensed under the Redis Source Available License v2 and the Server Side Public License v1.[6] On May 1, 2025, Redis became tri-licensed beginning with version 8.0, with the GNU Affero General Public License as the third option.[7]

  1. ^ a b Bernardi, Stefano (January 4, 2011). "An interview with Salvatore Sanfilippo, creator of Redis, working out of Sicily". EU-Startups. Menlo Media.
  2. ^ a b Haber, Itamar (July 15, 2015). "Salvatore Sanfilippo: Welcome to Redis Labs". Redis.
  3. ^ "Page 7 of 7 - Redis - Google Code Archive - Long-term storage for Google Code Project Hosting". code.google.com. Retrieved 22 March 2024.
  4. ^ "Release 8.0.0 · redis/redis". Retrieved 3 May 2025.
  5. ^ "Introduction to Redis". Redis is written in ANSI C and works in most POSIX systems like Linux, *BSD, OS X without external dependencies.
  6. ^ a b "LICENSE.txt". GitHub. 20 March 2024.
  7. ^ a b Cite error: The named reference agpl was invoked but never defined (see the help page).
  8. ^ a b "FAQ: Redis". Redis.io. Retrieved 12 February 2022.
  9. ^ "Google Groups". groups.google.com. Retrieved 25 February 2022.
  10. ^ "Redis". Redis. Retrieved 2023-07-22.
  11. ^ Cite error: The named reference :0 was invoked but never defined (see the help page).
  12. ^ Clark, Lindsay. "Redis becomes the most popular database on AWS as complex cloud application deployments surge". www.theregister.com. Retrieved 2023-07-22.
  13. ^ "Instablinks EP 07: Redis™—The Most Popular In-Memory Database Technology". Instaclustr. Retrieved 2023-07-22.
  14. ^ "DB-Engines Ranking". DB-Engines. Retrieved 2023-07-22.
  15. ^ "A conversation with Salvatore Sanfilippo, creator of the open-source database Redis". VentureBeat. 2016-06-20. Retrieved 2021-06-29.
  16. ^ Kepes, Ben (July 15, 2015). "Redis Labs hires the creator of Redis, Salvatore Sanfilippo". Network World. Retrieved August 30, 2015.
  17. ^ Francisco, Thomas Claburn in San. "Database maestro Antirez says arrivederci to Redis: Seems he wants an unstructured life writing code, not a structured one managing software". www.theregister.com. Retrieved 2021-06-29.
  18. ^ "Database startup Redis Labs rebrands as ... just Redis". SiliconANGLE. 2021-08-11. Retrieved 2021-08-11.
  19. ^ Claburn, Thomas. "Redis has a license to kill: Open-source database maker takes some code proprietary". The Register. Retrieved 2024-03-21.

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