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capped.js
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capped.js
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var Db = require('../lib/mongodb').Db,
Connection = require('../lib/mongodb').Connection,
Server = require('../lib/mongodb').Server;
var host = process.env['MONGO_NODE_DRIVER_HOST'] != null ? process.env['MONGO_NODE_DRIVER_HOST'] : 'localhost';
var port = process.env['MONGO_NODE_DRIVER_PORT'] != null ? process.env['MONGO_NODE_DRIVER_PORT'] : Connection.DEFAULT_PORT;
console.log("Connecting to " + host + ":" + port);
var db = new Db('node-mongo-examples', new Server(host, port, {}), {native_parser:true});
db.open(function(err, db) {
db.dropCollection('test', function(err, result) {
// A capped collection has a max size and optionally a max number of records.
// Old records get pushed out by new ones once the size or max num records is
// reached.
db.createCollection('test', {'capped':true, 'size':1024, 'max':12}, function(err, collection) {
for(var i = 0; i < 100; i++) { collection.insert({'a':i}); }
// We will only see the last 12 records
collection.find(function(err, cursor) {
cursor.toArray(function(err, items) {
console.log("The number of records: " + items.length);
db.close();
})
})
});
});
});