We've supported Redis 5 for a while, but we now ship and use Redis 6 now. We should deprecate support for Redis 5 like #327197 ### Redis 7.0 (released on 2022-04-27) ~~(2021-07/2021-09)~~ Redis 7.0 ~~will be released in 2021-07 through 2021-09~~ was released on 2022-04-27, which deprecates Redis 5.2. So we had better drop support of Redis 5 around %"15.2". If so, we can deprecate Redis 5 support around %"15.2". > The team announced [...] they plan to increase the cadence of major Redis releases to two per year, with Redis 7.0 planned for Q3 of this year. [...] https://redislabs.com/blog/top-9-takeaways-from-redisconf-2021/ ### Redis 5.x deprecation Redis 5.0 through 5.2 reached it EOL on 2022-04-27: > Once version 3.0.0 replaces 2.2 as the latest stable, versions 2.0 and 2.2 are maintained, whereas version 1.x reaches its end of life. https://redis.io/docs/about/releases/ ## TODO All milestones are temporary and ~Stretch. ### %"14.1" - [x] Add CI Redis dependency 6.0: TODO - cf. #238216 and !52669 ### %"14.2" - [x] Show warnings with `rake gitlab:check` that Redis 5 is outdated: TODO - cf. !59072 or !29395 - [x] Add Redis 5 deprecation to the coming release post: TODO - cf. gitlab-com/www-gitlab-com!79509 or gitlab-com/www-gitlab-com!45801 ### %"14.4" - [x] Set the minimum version to 6 with `rake gitlab:check` that Redis 6 is not supported any more: TODO - cf. !62156 - [x] Update software requirements docs and README.md of gitlab-org/gitlab: TODO - cf. !62159 ### %"15.2" - [x] Bump recommended Redis version from 5.0 to 6.0 !91646 - cf. !59072 ### %"15.3" - [x] Add Redis 5.x deprecation notice - https://gitlab.com/gitlab-org/gitlab/-/blob/master/data/deprecations/templates/example.yml - Formerly needed to post to www-gitlab-com cf. https://gitlab.com/gitlab-com/www-gitlab-com/-/merge_requests/79509 ### %"15.6" - [~] Drop usage of Redis 5.0 from our CI - https://gitlab.com/gitlab-org/gitlab/-/merge_requests/102111 ### %"16.0" - [x] Set the minimum version to 6.0 with `rake gitlab:check` that Redis 5 is not supported any more - https://gitlab.com/gitlab-org/gitlab/-/merge_requests/118448 - [x] Update minimum required Redis version in installation documentation. - https://gitlab.com/gitlab-org/gitlab/-/merge_requests/119224 - [x] Add changelog item item for Redis 5.x removal https://gitlab.com/gitlab-org/gitlab/-/merge_requests/119121 ### Refs. - Redis 4: #327197 - Redis 3: #213174