Borg

Live as if you were to die tomorrow. Learn as if you were to live forever.


Django Blog 3 years, 2 months ago

跟着 [codingforentrepreneurs](http://codingforentrepreneurs.com) 网站上的三个系列教程从头到尾敲完了这个博客系统,并且对前端页面进行了些修改,还补了些Bug,总算是可以用了, g…

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微博社交网络图:爬虫+可视化 3 years, 2 months ago

# 微博爬虫 + 社交网络图可视化 项目地址:[WeiboSocialNetwork](https://github.com/BigBorg/WeiboSocialNetwork) 先展示下结果再来解释代码: 首先有个R语言生成…

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像素涂鸦应用总结之Ionic 3 years, 2 months ago

# Ionic 开头推销下刚写的应用啊,详见[博文](https://bigborg.github.io/2017/03/29/ionic-pixelDrawing/)。大概就是底下这样的: ![drawing](http:/…

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Passing data between pages 3 years, 2 months ago

# Ionic 页面间传递数据 Ionic 页面间传递数据方式: - NavController, NavParams - Modal - Provider - Events 以下以页面A转换到页面B为例 ## …

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Backup and Recovery 3 years, 2 months ago

# Security - authentication - access control/authorization - encryption - network setup - auditting ## authen…

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Scalability 3 years, 2 months ago

# Sharding & Data Distribution shard key 用于决定文档存于哪个 shard, 分为 **range based** 和 **hash based**。以 range based 为例,一个[min…

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Application Engine 3 years, 2 months ago

# Connecting to a Replica Set from Pymongo ```py read_pref = pymongo.read_preferences.ReadPreference.SECONDARY conne…

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Replication 3 years, 2 months ago

# Replication ## Why replication? - high availability (when server failure occurs) - durability - scaling in some…

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Performance 3 years, 2 months ago

# Performance 本周的内容基本与上周[Mongodb for DBAs: week3](https://bigborg.github.io/2017/01/30/mongodb-for-DBAs-wk3/)重复,重点和之前没…

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Performance 3 years, 2 months ago

# Storage Engine Mongodb 现有两个存储引擎,默认的是MMAPv1,可选的是WiredTiger。可以在启动数据库时指定。wiredTiger支持而MMAPv1不支持的特性有:文档级别锁,数据压缩。 ```she…

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