Triggering a Lambda function by an EventBridge Events rule can be used as a serverless replacement of cron job. The highest frequency of it is one invocation per minute so that it cannot be used directly if you need to schedule a Lambda function more frequently. In this post, I’ll demonstrate another serverless solution of scheduling a Lambda function at a sub-minute frequency using Amazon SQS.

Authorization is the mechanism that controls who can do what on which resource in an application and it is a critical part of an application. In this post, I'll illustrate how to set up authorization in a GraphQL API using a custom directive and Oso, an open-source authorization library.