mirror of
https://github.com/gravitational/teleport
synced 2024-10-21 17:53:28 +00:00
8356ae6a74
This commit expands the usage of the caching layer for auth server API: * Introduces in-memory cache that is used to serve all Auth server API requests. This is done to achieve scalability on 10K+ node clusters, where each node fetches certificate authorities, roles, users and join tokens. It is not possible to scale DynamoDB backend or other backends on 10K reads per seconds on a single shard or partition. The solution is to introduce an in-memory cache of the backend state that is always used for reads. * In-memory cache has been expanded to support all resources required by the auth server. * Experimental `tctl top` command has been introduced to display common single node metrics. Replace SQLite Memory Backend with BTree SQLite in memory backend was suffering from high tail latencies under load (up to 8 seconds in 99.9%-ile on load configurations). This commit replaces the SQLite memory caching backend with in-memory BTree backend that brought down tail latencies to 2 seconds (99.9%-ile) and brought overall performance improvement. |
||
|---|---|---|
| .. | ||
| agent.go | ||
| agentpool.go | ||
| api.go | ||
| cache.go | ||
| discovery.go | ||
| doc.go | ||
| localsite.go | ||
| peer.go | ||
| remotesite.go | ||
| srv.go | ||