Four actionable techniques to reduce CloudBase Cloud Function cold start latency: move initialization out of the handler, trim dependencies, tune memory, and enable Per-instance Concurrency. Full code included.
Build a thin reverse proxy in a CloudBase Web Cloud Function (HTTP trigger) to handle overseas LLM access, keep API keys out of the frontend, and pass through SSE streaming responses.
Run a monitoring Cloud Function on a cron schedule. Use @cloudbase/manager-node's getFunctionLogsV2 to pull Cloud Function logs from the past 5 minutes, treat RetCode 500 as errors, and send alerts to a WeCom Group Bot with threshold checks and deduplication.
Configure a timer trigger in cloudbaserc.json to run daily reports, data cleanup, and cache warming. Covers the 7-field cron format, idempotency for duplicate-run prevention, and failure alerts via WeCom webhook.
The Mini Program frontend obtains user authorization via wx.requestSubscribeMessage, the server uses cloud.openapi.subscribeMessage.send to deliver messages, covering differences between one-time and long-term subscriptions and handling of 43101/47003 errors.
Use a CloudBase Cloud Function to push text, Markdown, images, and other message types to a WeCom Group Bot via Webhook. Add a timer trigger for monitoring alerts.
When locally debugging cloud functions in WeChat Developer Tools, you may encounter the error message WxCloudSDKError: [Error] secret id error. This error is usually caused by the local debugging environment failing to correctly verify secretId.