Telegram 长轮询 20-30 秒延迟排查流程

• Telegram channel is enabled and gateway is using long-polling mode.
• You can access gateway logs and current channel config.

1. Record baseline latency by sending 10 test messages and measuring send-to-receive delay.
2. Check Telegram channel options (`blockStreaming`, `streamMode`, concurrency defaults) and compare with known-good config.
3. Tail gateway logs during tests and mark where delay is introduced (before receive vs after receive).
4. Restart gateway and re-run the same latency script to confirm whether delay is transient or persistent.

• Issue report confirms delay symptoms, but root cause may differ by host/network stack（需验证）。
• Do not change multiple channel parameters at once, otherwise attribution becomes unreliable.

This tip is aggregated from community/public sources and preserved with attribution.