One of the main strengths of serverless and AWS Lambda is that, from a developer perspective, your focus is mostly shifted toward implementing business logic. Anyway, when you are writing a handler, you still have to deal with some common technical concerns outside business logic, like input parsing and validation, output serialization, error handling, etc. …
Using Sequelize with node.js project is great, which provides all in one pack functionalities, including migrations, ORMs, etc. Sometimes, we only need migrations without ORMs. ex: using direct GraphQL libraries to make interface. db-migrate is database migration framework for node.js. Usage is simple, install via npm, similar to sequelize.
In web application development, you’d face a moment that need to check websocket connection status.For example, you’d have a situation that your web backend needs to check if users are active in the browser. It’s as very simple as you just need to check websocket property WebSocket.readyState. It has 4 possible values; “CONNECTING”, “OPEN”, “CLOSING”, “CLOSE”. …