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从这一篇开始我们主要讨论mongodb的部署技术。 我们知道sql server能够做到读写分离,双机热备份和集群部署 ...
仔细观察“划线区域“的信息,发现db文件夹下有一个类似的”lockfile”阻止了mongodb的开启,接下来我 ...

mongodb操作的模块手动封装

[ 2017-09-05 07:09:01 | by 店小二04 ]
mongodb操作的模块手动封装 :这些代码都是基于nodejs进行的. 在nodejs目录下创建一个模块文件*.j ...

Mongodb常用的身份验证方式

[ 2017-09-05 07:10:02 | by 店小二04 ]
1. 介绍 不管数据库是在多安全的环境或者本地环境,给数据库建立一个安全的环境是很有必要的。 Mongodb提 ...

Golang连接MongoDB数据库

[ 2017-08-15 07:35:02 | by 店小二05 ]
go get gopkg.in/mgo.v2 import "gopkg.in/mgo.v2" go get labix.org/v2/mgo import "labix.org/v2/mg ...

HBase常用操作命令

[ 2017-08-15 07:36:01 | by 店小二05 ]
HBase常用命令 进入shell $ echo $HBASE_HOME /data/program/hbase [h ...

This Week in Neo4j 12 August 2017

[ 2017-08-15 07:37:02 | by 店小二03 ]
Welcome to this week in Neo4j where we round up what’s been happening in the world of graph databas ...
The ShadowBrokers (SB) have recently started a new Tor based market called Scylla Hackin ...

Redis源码――内存淘汰机制

[ 2017-08-15 07:39:01 | by 店小二03 ]
noeviction:内存达到了上限,不淘汰内存数据,遇到大部分写命令返回Out Of Memory错误。 allkeys-lru:在 ...
In thefirst article in this series, we explored some core concepts of graph databases. This time, w ...
【问题描述】: 版本:MySQL 5.6.36 (以上的版本都可能出现) 行为:对某些访问频繁的大表做Onlin ...
虽然这几个参数我以前也有学习过,但是一直没有在源码级别进行证明,所以一直也没有写,但是今天群里有朋友 ...
mongodb是最常用的nodql数据库,在数据库排名中已经上升到了前六。这篇文章介绍如何搭建高可用的mongodb(分 ...
These are the database, cloud, developer and security news bits for the week ending August 11th brou ...
Bobbing around the Sargasso Sea of storage news this week we see cast-off sandals, bits of plastic, ...

Redis数据库2

[ 2017-08-14 22:51:04 | by 店小二03 ]
一.存储list 1.概述 list类型是按照插入顺序排序的字符串链表,可以在头部(left)和尾部(right)添加新 ...
I’ve started a new project to create a Cassandra Cluster for development purposes. It’s availa ...

Cypher: Write Fast and Furious

[ 2017-08-14 22:53:02 | by 店小二04 ]
ByChristophe Willemsen, Principal Consultant, GraphAware | August 11, 2017 Editor’s Note: Thi ...

Redis主从复制――Slave视角

[ 2017-08-14 22:54:02 | by 店小二05 ]
为了提高性能和系统可用,Redis都会做主从复制,一来可以分担主库压力,二来在主库挂掉的时候从库依旧可以提 ...
Additionally, you can now use new versions of Apache Flink (1.3.0) , Apache Zeppelin (0.7.2) ...
SEATTLE ( BUSINESS WIRE ) Versive, a leader in AI-powered cybersecurity, announced a strategic pa ...

This Week in Neo4j 15 July 2017

[ 2017-08-14 22:57:01 | by 店小二05 ]
Welcome to this week in Neo4j where we round up what’s been happening in the world of graph databas ...

node-mongodb-native keep collection?

[ 2017-08-14 11:05:01 | by 店小二05 ]
Right now I'm opening a collection on every request: ie: app.get('/route', function (req, re ...
Introduction In this tutorial, we are going to configure a mail server with virtual domains and u ...
Here's the relevant code: app.get('/all', function(req,res) { Party.find({},,function(p) { ...
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