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fix(19.7): RA-IN-03 document that the Redis session store needs a standalone Redis

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reserveScript reads the record keys of the binding set's members, which it
cannot declare in KEYS, and its declared keys hash to different slots, so
Redis Cluster refuses it and a key-pattern ACL must allow the whole
<prefix>mcp: range. The script's comment, the pier README's
mcp.sessions.store row (which also no longer says the store opens on the
first request) and docs/services/mcp.md say so.
This commit is contained in:
Jakub Zych
2026-10-23 20:17:17 +02:00
parent 38e028fbe6
commit 58408aaa83
3 changed files with 7 additions and 2 deletions
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docs/services/mcp.md
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@@ -33,7 +33,7 @@ path: /mcp
| `mcp.enabled` | `false` | Mounts POST, GET and DELETE at `mcp.path`. |
| `mcp.path` | `/mcp` | The endpoint path. A route a plugin already registered there fails boot. |
| `mcp.allow_personal_tokens` | `false` | Also accepts personal API tokens (see Identity). |
| `mcp.sessions.store` | `memory` | `memory` for one instance, `redis` to share sessions and events across instances through `redis.url`. |
| `mcp.sessions.store` | `memory` | `memory` for one instance, `redis` to share sessions and events across instances through `redis.url` (a standalone Redis; Redis Cluster is not supported). |
| `mcp.sessions.idle_ttl` | `30m` | Sliding idle TTL of a session. |
| `mcp.sessions.max_per_binding` | `20` | Open sessions one client-and-user pair (or one personal token) may hold. |
| `mcp.resource` | `app.url` + `mcp.path` | The resource indicator; must equal the OAuth server's MCP resource. |