React components re-render when there is a change in their state or props. However, there might be scenarios where a component receives new props but doesn’t need to re-render because the computation result remains the same. In such cases, you can use‘useMemo()’to memoize the computed ...
2. MongoDB Change Streams MongoDB change streams provide a high-level abstraction built directly on top of the oplog. They allow applications to immediately react to data changes without polling the database. With a simple .watch() method, you can subscribe to real-time change events on a ...
Get Started with Atlas MongoDB provides monitoring and tools to observe and address the performance overall health of your database instances. Read on to understand the metrics and tools you can use to monitor your clusters. In what follows, we’ll guide you through: Why it’s importan...
Setup MongoDB on a Macbook I use a Macbook at work and a Ubuntu at home, so both unix based operating systems. Hence my installation skills rely on using the command line. Remember, I am doing this just to practice working with MongoDB, so the freecommunity versionof MongoDB should wo...
When dealing with dynamic components that need to be added or removed based on user interactions, `useReducer()` can help manage component creation and destruction. Optimizing Performance: For fine-grained control over re-renders, `useReducer()` can be combined with `React.memo` and `useCallba...
In the shell, specify that you want to use theadmindatabase to create your user: use admin Copy Next, create a role and password by adding a username and password with thedb.createUsercommand. After you type this command, the shell will prepend three dots before each line until the comma...
Scalability: MongoDB is horizontally scalable by design and supports sharding for handling large volumes of data and high loads. Real-time processing: With MongoDB, applications can react to data changes almost instantly by subscribing to change streams. ...
How Do Change Streams Work in MongoDB? Get Started Free What are Change Streams? A change stream is a real-time stream of database changes that flows from your database to your application. With change streams, your applications can react—in real time—to data changes in a single ...
To perform a “starts with” query in MongoDB using regular expressions, you’ll use thefind()method along with the regex pattern. db.collection.find({field: /^pattern/}) Here’s what each component means: db.collection: Refers to the collection where the query will be executed. ...
Once the Homebrew package is installed, you can use brew to download MongoDB. In your macOS Terminal, type the following command. brewinstallmongodb-community@version-number The following binaries will be installed as part of this installation. ...