[ Laravel 5.3 文档 ] 数据库 ―― Redis
1、简介 Redis 是一个开源的、高级的键值对存储系统，经常被用作数据结构服务器，因为其支持字符串、Hash、列表、集合和有序集合等数据结构。在Laravel中使用Redis之前，需要通过Composer安装 predis/predis 包： composer require predis/predis 配置 应用的Redis配置位于配置文件 config/database.php...
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Everything you need to know about data modelling for document databases
Back in 90s and early 20th century applications were like following: Today, building applications is different than what it was back in 2000. Building modern day applications involves quite a few...
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MyRocks―― Facebook 开源的储存引擎
MyRocks RocksDB是facebook基于LevelDB实现的，目前为facebook内部大量业务提供服务。经过facebook大量工作，将RocksDB为mysql的一个存储引擎移植到MySQL，称之为MyRocks。 经过两年的发展，MyRocks已经比较成熟（RC阶段），现已进入了facebook MySQL的主分支了。MyRocks是开源的,参见 git 。...
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Neo4j With Scala: Awesome Experience with Spark
Lets start our journey again in this series. In the last blog we have discussed about the Data Migration from the Other Database to the Neo4j. Now we will discuss that how can we combine Neo4j with...
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Using LoopBack to Build APIs For APIs
"Building APIs for APIs" sounds a bit like infinite recursion, but actually I'm talking about one of the cooler aspects of LoopBack: the ability to define a server API that maps to another server....
View ArticleIBM, Cloudera join RStudio to create R interface to Apache Spark
Computerworld | Sep 28, 2016 11:27 AM PT RELATED TOPICS Big Data Data Analytics R Language R users can now use the popular dplyr package to tap into Apache Spark big data. The new sparklyr package is...
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AI? Hadoop? Companies still don’t have the data basics right, says Birst
Birst’s core strategy focuses on being a seller of ‘networked BI’ in the cloud the idea being that most enterprises have little, or no, insight into the data across their entire organisation....
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Get to know our Couchbase Community - Meet Tom Coates
Congratulations to our newest Couchbase Community Champion, Tom Coates who hails from Seattle. Tell us about yourself and what you do in your daily role? I’m a Sr. Principal Architect at Nuance...
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PLSQL性能优化技巧
1、理解执行计划1-1.什么是执行计划oracle数据库在执行sql语句时，oracle的优化器会根据一定的规则确定sql语句的执行路径，以确保sql语句能以最优性能执行.在oracle数据库系统中为了执行sql语句，oracle可能需要实现多个步骤，这些步骤中的每一步可能是从数据库中物理检索数据行，或者用某种方法准备数据行，让编写sql语句的用户使用，oracle用来执行语句的这些步骤的组合被称为...
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Use curl to create a CouchDB admin user
This too me longer to find than it should have done, so I'm writing it here for future me. When you install CouchDB, it is in a mode where anyone can do anything with the database including creating...
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The nine hours micro benchmark
We’ve been running all sort of benchmarks on RavenDB, ranging from micro optimizations to a single heavily used routine that focused on re-ordering the instructions so the CPU can execute them in...
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Best Hbase Books For Beginners
Apache is known for its open source ideology with dozens of incredible tools for developers and system administrators. Hbase is one such tool built on top of Java and powered by the Hadoop project. To...
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Who's On First Life Cycle Documentation
Who’s On First is Mapzen’s gazatteer of places. Within Who’s On First, each place is represented as a record with a unique and stable identifier that we call the wof:id . Because our gazetteer tracks...
View ArticleGolang redis 操作初体验
安装 我使用的是 https://github.com/go-redis/r... 这个 golang 客户端, 因此安装方式如下: go get gopkg.in/redis.v4 接着在代码中导入此包即可: import "gopkg.in/redis.v4" 基本操作 创建客户端 通过 redis.NewClient 函数即可创建一个 redis 客户端, 这个方法接收一个...
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Stripe acquires team behind NoSQL database startup RethinkDB
Stripe has picked up the engineering team behind the NoSQL database startup RethinkDB, ending days of speculation in forums about the company’s future. However, RethinkDB is closing its doors citing...
View ArticleMongoDB vs RethinkDB : Why we had to choose MongoDB
We keep a small portion of our data in MongoDB. We recently evaluated RethinkDB as a replacement for our Mongo cluster, after reading about how much more robust its storage engine is. Here is our...
View ArticleRedis 事务学习
Redis 事务可以一次执行多个命令， 并且带有以下两个重要的保证： 事务是一个单独的隔离操作：事务中的所有命令都会序列化、按顺序地执行。事务在执行的过程中，不会被其他客户端发送来的命令请求所打断。 事务是一个原子操作：事务中的命令要么全部被执行，要么全部都不执行。 一个事务从开始到执行会经历以下三个阶段： 开始事务。 命令入队。 执行事务。 实例 以下是一个事务的例子， 它先以 MULTI...
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The bug in the budgeting process
In mypreview post, I mentioned that removing artificial batch limits has caused us to double our performance. But what are those artificial batch limits? Well, anything that doesn’t involve actual...
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