The updateOne() method is similar to updateMany() except that MongoDB will update only the first document that matches filter: const res = await Product.updateOne({ name: 'iPhone 13' }, { color: `Black` }) If you want to overwrite an entire document rather than updating specific field...
MongoDB update method is basically used to update a single document from the collection in MongoDB. Using MongoDB updateMany method we can update many documents in the same query, but while using updateOne method we can update a single document from the collection. The below example shows that...
Update a document in MongoDB Now for the U in CRUD. This is handled in Listing 5. Listing 5. Updating a document .get('/update', (req, res) => {constclient =newMongoClient("mongodb://localhost:27017");asyncfunctionrun(){try{awaitclient.connect();constdatabase = client.db("intro"...
The status of a MongoDB server process can be an indication of whether we need to drill down into its activity or health. A process that is unresponsive or does not answer to our commands should be immediately investigated. Monitor with MongoDB Atlas: Cluster health and process health c...
To enable RAG to retrieve relevant documents, we need a vector search engine that can efficiently store and query large-scale document embeddings. MongoDB Atlas allows us to index documents based on their embeddings and perform similarity search using cosine distance, euclidean distanc...
1. Tailing the MongoDB Oplog At the heart of MongoDB’s native replication system is theoplog (operation log), a capped collection that logs every write operation—insert, update, and delete—performed on your MongoDB cluster. By tailing the oplog, you can stream CDC events from the source...
I always use MongoDB as a database when I work on an app. And I like to connect to a database on my computer because it speeds up dev and test-related work. Today, I want to share how to create and connect to a local MongoDB Database. ...
Use the findOneAndUpdate() Method in MongoDBThe method db.collection.findOneAndUpdate() updates the collection’s matching document according to a selection criteria. This method will only update the first document that matches the selection criteria if there are more than one document matches....
Core Concepts Around MongoDB I’ve been saying document databases over and over up to this point, but what actually are they? Here are the main concepts: Documents: data is stored in objects called documents. In simple terms, documents are similar to JSON key-value objects. A single documen...
MongoDB client mongo Data export tool mongoexport Data import tool mongoimport Make the packages executable. Run thechmod +x mongocommand to grant a client permission to connect to an instance. Run thechmod +x mongoexportcommand to grant a client permission to export data. ...