Building a serverless Slack bot using Cloudflare Workers

This post details the technical implementation of a serverless Slack bot using Cloudflare Workers. It covers handling Slack webhooks, authenticating requests with a verification token, parsing user messages to extract stock symbols, making HTTP requests to the Alpha Vantage API, and constructing Slack-formatted responses. Key technical aspects include using `fetch` for API calls, leveraging `formData` for webhook payloads, implementing caching with `cf.cacheTtl` for performance and rate limiting, and structuring the Worker code with event listeners and helper functions. The post also touches upon best practices for secret management (SLACK_TOKEN, ALPHA_VANTAGE_KEY) and error handling.