ReasonJun

Caching is the process of storing data in a temporary location so that it can be accessed more quickly later. In GraphQL, caching can be used to improve the performance of queries by storing the results of previous queries in a cache and returning them if the same query is made again. There are two main types of caching in GraphQL: Client-side caching is done by the client application. The clien..

Apollo is a company that provides tools and services for building GraphQL APIs and applications. Apollo's products include: Apollo Server: A GraphQL server that is easy to set up and use. Apollo Client: A GraphQL client library that makes it easy to fetch and cache data from GraphQL servers. Apollo Studio: A cloud-based platform for monitoring and debugging GraphQL APIs. Apollo Server is a power..

A resolver in GraphQL is a function that is responsible for fetching the data for a single field in a GraphQL schema. Resolvers are typically written in JavaScript, but they can be written in any language that can be executed on the server. When a client makes a GraphQL query, the resolvers for the fields in the query are called in order to fetch the data. The resolvers can fetch data from a var..

GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. It is a declarative language, which means that you describe what data you want, not how to get it. This makes it more efficient and flexible than traditional REST APIs. GraphQL is organized in terms of types and fields, not endpoints. This means that you can ask for exactly the data you need,..

The MVC pattern in Express.js is a software design pattern that separates an application into three interconnected parts: the model, the view, and the controller. The model is responsible for storing and retrieving data. The view is responsible for presenting the data to the user. The controller is responsible for handling user requests and updating the model. The MVC pattern is a popular choice..

Middleware in Express.js is a function that is executed before the request is routed to a specific controller or action. Middleware can be used to perform any number of tasks, such as: Logging the request and response. Validating the request data. Encrypting or decrypting the request data. Caching the request data. Generating a response. And much more. Middleware functions are chained together, ..

The res.end() and res.send() methods in Express.js are both used to send data back to the client. However, there are some key differences between the two methods. res.end() only sends the data that is passed to it. It does not set any headers or end the response. res.send() sends the data that is passed to it, and it also sets the Content-Type header to the appropriate value. It also ends the re..

The res.json() and res.send() methods in Express.js are both used to send data back to the client. However, there are some key differences between the two methods. res.json() sends the data in JSON format. This is the preferred format for sending data between applications, as it is both human-readable and machine-readable. res.send() can send data in any format. This includes JSON, HTML, images,..

Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. It is designed to be easy to use and extend, and it is used by a wide variety of developers, from beginners to experienced professionals. Some of the features of Express.js include: Routing: Express.js provides a powerful routing system that allows you to..

setTimeout, setImmediate, and process.nextTick are all functions that allow you to schedule a callback function to be executed after a delay. However, they work in different ways and have different performance implications. setTimeout(): setTimeout() schedules a callback function to be executed after a specified number of milliseconds. The callback function is placed on the event queue, and the ..