--oplogSize arg size limit (in MB) for op log 指定操作日志的大小 --opIdMem arg size limit (in bytes) for in memory storage of op ids指定存储操作日志的内存大小 Sharding options: --configsvr declare this is a config db of a cluster 指定shard中的配置服务器 --shardsvr declare this is a...
第一个参数指定了MongoDB的连接URL，格式为mongodb://<host>:<port>/<database-name>?<options>，...
const size = process.argv[2]; const n = process.argv[3] || 100; const buffers = []; let i; for (i = 0; i < n; i++) { buffers.push(Buffer.alloc(size)); process.stdout.write(process.memoryUsage().heapTotal + "\n"); } 让Node 使用类似这样的命令运行process.js: $ node ...
// Type 1: In-memory only datastore (no need to load the database)var Datastore = require('nedb') , db = new Datastore(); // Type 2: Persistent datastore with manual loadingvar Datastore = requi... 其他 node.js数据库 数据库: 存放数据的仓库 数仓 数据库是什么: 数据库是按照数据结...
is commonly used in databases like MongoDB.When to Choose:If you’re working with MongoDB or ...
大家好,又见面了,我是全栈君 前言: A circular buffer, cyclic buffer or ring buffer is a data structure that uses a single...buffer is well suited as a LIFO [后进后出]buffer...the circular buffer...circular buffer is managed...actual buffer in memory one to the buffer end in memory ...
proxy.isRootCAFileExists()&&proxy.generateRootCA();varoptions={type:"http",port:8001,hostname:"localhost",rule:require("path/to/my/ruleModule.js"),dbFile:null,// optional, save request data to a specified file, will use in-memory db if not specifiedwebPort:8002,// optional, port for...
在NodeJS/Express中停止缓存MongoDB查询结果的方法有以下几种: 使用Mongoose的lean()方法:Mongoose是一个NodeJS的MongoDB对象建模工具,它提供了一个lean()方法,可以在查询时将结果转换为普通JavaScript对象,而不是Mongoose文档对象。这样可以避免Mongoose的缓存机制,每次查询都会从数据库中获取最新的结果。示例代码如下...
proxy.isRootCAFileExists()&&proxy.generateRootCA();varoptions={type:"http",port:8001,hostname:"localhost",rule:require("path/to/my/ruleModule.js"),dbFile:null,// optional, save request data to a specified file, will use in-memory db if not specifiedwebPort:8002,// optional, port for...
这样,对于同时维系着数十条或者数百条(聊天室)的 connection 的服务器,一直非空闲,还要顾上各方面资源(CPU usage、consuming memory……),显然不是一件容易事情,甚至如“开心网”那样成千上万笔 connection 场景就是对服务端极大的考验,如果占用的线程不能得到迅速释放,将会给服务器带来灾难性的后果!