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delay_queue

[ 2017-01-06 12:16:02 | by 店小二03 ]
延迟队列的使用场景 一分钟后若订单未支付,则关闭订单 每隔3秒钟(或其他时间策略) 执行一个任务 ...
最近开发了一个既要高并发写又要高并发读的项目,写的QPS比读还要高,这个需求几乎是变态的,任何缓存的工具 ...
Some 2,000 MongoDB installations have been compromised by an attacker demanding administrators pay 0 ...
PostgreSQL is not very well known among Oracle developers and DBA’s. Yet, the skill set of an Orac ...
3.2版本复制集同步的过程参考 MongoDB 复制集同步原理解析 在 3.4 版本里 MongoDB 对复制集同步的全量同 ...
环信即时通讯云使用案例 背景介绍 pika在环信的即时通讯云平台系统中使用,用来存储消息内容和日志,目 ...

mongodb 集群迁移

[ 2017-01-06 12:22:01 | by 店小二05 ]
问题:测试机上有一台全部运行在本地的mongodb集群。由于网络变化。现在本机的ip发生改变。因此 原来配置的 ...
In this article, I am going to show you to connect the Redis key-value data store and Mule ESB using ...
So far we've looked atcreating documents ,retrieving document, and now let's look into sorting docu ...
This article is the second part of creating a CRUD application with Express and MongoDB. We’re goi ...

mac下mongoDB的安装

[ 2017-01-06 12:26:01 | by 店小二03 ]
官方介绍 MongoDB(来自于英文单词“Humongous”,中文含义为“庞大”)是可以应用于各种规模的企业、各个 ...

My Alexa Skill with Storage

[ 2017-01-06 12:27:01 | by 店小二05 ]
My Alexa Skill withStorage I recently wrote about my first foray into writing an Alexa custom s ...
Pig is a framework built on top of Hadoop and it abstracts development on MapReduce apps. This is a ...
If you’ve ever worked with Hadoop then you know about the many related tools platforms. Hive i ...
Hadoop is quickly becoming a staple in big data. It’s a huge framework spanning many different tec ...
How do big data people go about making end-of-year reviews and predictions? Using data is the obvio ...
1. Objective This hdfs erasure coding tutorial briefs about the advantages of erasure coding in ...

HBase Compaction

[ 2017-01-06 12:33:01 | by 店小二05 ]
Merge 接着上回的Split说,既然有split,那应该对应的有merge吧。然而并没有,也不是完全没有,只是对me ...

Redis源码剖析--事务Multi

[ 2017-01-04 21:18:02 | by 店小二04 ]
数据库事务,是指作为单个逻辑工作单元执行的一系列操作,这些操作要么全部执行,要么全部不执行。事务处理 ...
In case you missed this webinar, here’s a 1.5h holiday video about how Gluent “turbocharges” your ...
I can spend a lot of time gushing about Couchbase and the details about its architecture and impleme ...
Not too long ago I wrote about using Couchbase in an Ionic 2 application . In the previous example ...

Redis源码剖析--AOF持久化

[ 2017-01-04 18:36:01 | by 店小二05 ]
在前一篇博客 Redis源码剖析 RDB持久化 中,我们分析了RDB持久化就是按照特定的格式将服务器中数据库里 ...
resultMap的定义mapper namespace="dancheng.mybatis.mapper.OrdersMapperCustom" !-- 查询用户 ...
Mybaits利用resultMap实现一对多。对于一对多的resultMap的定义resultmap type="dancheng.mybatis.po.Or ...
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