node js mongodb find example

Example of using Node. js to implement RESTful API, node. jsrestful Basic RESTful concepts REST (Representational State Transfer) describes an architecture-style network system that first appeared in Roy Fielding's doctoral thesis in 2000. In the REST service, application status and functions can be divided into variou

Install and use Mongoose with Node. js to operate MongoDB. Install mongoose Use express to prepare a TestMongoDB project. The command sequence is as follows: express TestMongoDBcd TestMongoDBnpm install After running the preceding command, run the following command to install mongoose: npm install mongoose --save This command will install mongoose and use it as t

A. MongoDB:Because 10gen is one of the sponsors, MongoDB has good node. JS support.A. Basic support: There are two commonly used components in node. JS support for MongoDB MongoDB, Mong

Node. js uses mongoskin to operate mongoDB instances. I. Nonsense Developed the tourism tag service, Weibo tag retrieval system, map service, and web APP service from March January... use MongoDB scenario from. NET, JAVA environment to node.

Tags: node. js replset node. js Replica SetWith the rise of web2.0, the application of high concurrency large data volume is becoming more and more obvious, and the traditional relational database is weak in this aspect. A spear has its own shield, and the presence of a memory db compensates for the shortcomings of the

update, insert objnew,true is inserted , default is false, do not insert. A fourth parameter, The default is false, update only the first record found, if this parameter is true, the condition is checked out all the records are updated. Let's change a piece of data, the modifier uses the $setAfter running the following code, we find that the age in the data of name Zhangsan is modified to 50 (originally 25)Delete the data field, using the $unsetThe f

command is used to switch to the current database. if the database does not exist, a new one will be created first ). (5) in the shell command window, type the following command: "db. users. insert ({" name ":" bigbear "," password ":" 12345678 "})", (This command inserts a piece of data into the users set. if the set users does not exist, a new one is created first, and then the data is inserted. the parameter is passed in as JSON format ). (6) in the shell command window, type the following c

This article mainly introduces Node. examples of simple web page capturing functions implemented by js. This article uses libraries such as PhantomJS and node-phantomjs to implement these functions. For more information, see the following: web page capturing is a well-known technology, however, there are still a lot of complexities. Simple Web crawlers are still

must write the data to the primary node. Suppose the primary node is down and how the program should be tested. How to find a new primary node? don't worry about it. MongoDB has conquered your doubts. MONGODB provides driver supp