# Which Problems Are Solved
Add a cache implementation using Redis single mode. This does not add
support for Redis Cluster or sentinel.
# How the Problems Are Solved
Added the `internal/cache/redis` package. All operations occur
atomically, including setting of secondary indexes, using LUA scripts
where needed.
The [`miniredis`](https://github.com/alicebob/miniredis) package is used
to run unit tests.
# Additional Changes
- Move connector code to `internal/cache/connector/...` and remove
duplicate code from `query` and `command` packages.
- Fix a missed invalidation on the restrictions projection
# Additional Context
Closes#8130
# Which Problems Are Solved
Milestones used existing events from a number of aggregates. OIDC
session is one of them. We noticed in load-tests that the reduction of
the oidc_session.added event into the milestone projection is a costly
business with payload based conditionals. A milestone is reached once,
but even then we remain subscribed to the OIDC events. This requires the
projections.current_states to be updated continuously.
# How the Problems Are Solved
The milestone creation is refactored to use dedicated events instead.
The command side decides when a milestone is reached and creates the
reached event once for each milestone when required.
# Additional Changes
In order to prevent reached milestones being created twice, a migration
script is provided. When the old `projections.milestones` table exist,
the state is read from there and `v2` milestone aggregate events are
created, with the original reached and pushed dates.
# Additional Context
- Closes https://github.com/zitadel/zitadel/issues/8800
# Which Problems Are Solved
Cache implementation using a PGX connection pool.
# How the Problems Are Solved
Defines a new schema `cache` in the zitadel database.
A table for string keys and a table for objects is defined.
For postgreSQL, tables are unlogged and partitioned by cache name for
performance.
Cockroach does not have unlogged tables and partitioning is an
enterprise feature that uses alternative syntax combined with sharding.
Regular tables are used here.
# Additional Changes
- `postgres.Config` can return a pxg pool. See following discussion
# Additional Context
- Part of https://github.com/zitadel/zitadel/issues/8648
- Closes https://github.com/zitadel/zitadel/issues/8647
---------
Co-authored-by: Silvan <silvan.reusser@gmail.com>
# Which Problems Are Solved
We identified the need of caching.
Currently we have a number of places where we use different ways of
caching, like go maps or LRU.
We might also want shared chaches in the future, like Redis-based or in
special SQL tables.
# How the Problems Are Solved
Define a generic Cache interface which allows different implementations.
- A noop implementation is provided and enabled as.
- An implementation using go maps is provided
- disabled in defaults.yaml
- enabled in integration tests
- Authz middleware instance objects are cached using the interface.
# Additional Changes
- Enabled integration test command raceflag
- Fix a race condition in the limits integration test client
- Fix a number of flaky integration tests. (Because zitadel is super
fast now!) 🎸🚀
# Additional Context
Related to https://github.com/zitadel/zitadel/issues/8648
