Securing GraphQL API endpoints using rate limits and depth limits

Securing a Node.js GraphQL endpoint in production involves implementing rate and depth limiting to safeguard against API spam and complex query attacks. Rate limiting restricts the number of API requests a user or app can make within a specified timeframe, thus preventing server overloads or crashes from excessive requests. This can be done by IP address, user, or a combination of both, utilizing tools like Redis for storing rate-limiting data. Depth limiting, on the other hand, controls the complexity of queries by their depth, protecting servers from potentially harmful queries that could create infinite loops and overwhelm resources. The article details how to implement these measures using tools like graphql-rate-limit and graphql-depth-limit, emphasizing the importance of these practices for maintaining robust and secure GraphQL servers.