feat(cache): add channel info cache with TTL and throttling

Introduce `cached_get_chat` in `tg_cache` to store channel metadata on disk with a configurable TTL (default 12 hours). Use the `tg_rpc` throttling context for RPC calls. Update `rss_generator` to use the cached version and document related environment variables in `dockercompose.yml`.
2026-06-05 20:45:08 +03:00
parent 021f16cf14
commit 080dae3e74
4 changed files with 165 additions and 4 deletions
@@ -21,6 +21,9 @@ services:
      # TG_WATCHDOG_HEARTBEAT_EVERY: 30 # Emit an INFO watchdog heartbeat every N successful probes (default: 30)
      # TG_DISCONNECT_FLAP_LIMIT: 3   # Disconnect events within the flap window before an in-process restart (default: 3)
      # TG_DISCONNECT_FLAP_WINDOW: 120 # Flap detection window in seconds (default: 120)
+      # TG_CHAT_CACHE_TTL_HOURS: 12   # TTL for cached channel info (title/username/id); removes GetFullChannel from the poll hot path (default: 12)
+      # TG_RPC_CONCURRENCY: 1         # Max concurrent live Telegram RPC calls — global throttle (default: 1)
+      # TG_RPC_MIN_INTERVAL_MS: 500   # Minimum gap between live Telegram RPC starts, ms (default: 500)
      PYROGRAM_BRIDGE_URL: https://pgbridge.example.com
      API_PORT: 80
      TOKEN: ХХХ