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云计算Project:Twitter大数据分析

Posted on 2017-02-27 | In Cloud Computing |
本文是Twitter Analytics on the Cloud项目的介绍及分析总结。小组作业当时做的匆忙,现在再思考下可以优化的地方很多。感谢队友@shuangshuang 和 @烟酱。 项目介绍 目标: 在云上建立一个高性能又可靠的web服务。 设计,开发和部署并优化服务器以能够处理每秒上万次请求的高负载。 在一个1TB的数据集上完成ETL并载入到Mysql和HBase中。 设计MySQ ...
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云计算Project:基于多个后端的社交网络时间线的实现

Posted on 2017-02-23 | In Cloud Computing |
本文是关于CMU15619Cloud Computing项目:Social Networking Timeline with Heterogeneous Backends的介绍以及总结反思。 项目主要目标: 探索AWS的DBaas服务的申请、配置和管理 比较MySQL, HBase和MongoDB在使用Java API载入数据时的异同。 利用多个后端为同一个复杂的web应用提供数据。 比较不同 ...
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Java Interview Questions

Posted on 2017-02-11 | In Interview |
Always update... JVM is plantform dependent? Is the JVM (Java Virtual Machine) platform dependent or platform independent? What is the advantage of using the JVM, and having Java be a translated lan ...
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Leetcode 271. Encode and Decode Strings

Posted on 2017-02-10 | In LeetCode |
Question: Design an algorithm to encode a list of strings to a string. The encoded string is then sent over the network and is decoded back to the original list of strings. Machine 1 (sender) has the ...
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Leetcode 346. Moving Average from Data Stream

Posted on 2017-02-10 | In LeetCode |
Question Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. For example, 12345MovingAverage m = new MovingAverage(3);m.next(1) = 1m.next ...
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Distributed System-Indirect Communication and Naming

Posted on 2017-02-06 | In Distributed System |
CMU-95702分布式系统 第6、9章总结笔记 Indirect Messaging: Indirect communication is defined as communication between entities in a distributed system through an intermediary with no direct coupling between the ...
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Distributed System-Mobile and ubiquitous computing

Posted on 2017-02-06 | In Distributed System |
CMU-95702分布式系统 第19章总结笔记 Design issues in distributed mobile applications: Association: • Devices – Appear and disappear from the space. – Do so unpredictably – May be totally new to the space. – Or ...
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Distributed System-ACID

Posted on 2017-02-06 | In Distributed System |
CMU-95702分布式系统 ACID概念总结 ACID Transactions: Atomic: All or nothing. No intermediate states are visible. No possibility that only part of the transaction ran. If a transaction fails or aborts prior ...
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哪儿

Posted on 2017-01-24 | In 真实的生命 |
今天上Advanced Cloud Computing,三个教授就一个问题争论起来。 那真的是很触动我的一刻,加起来都快150岁的三个顶尖学术大牛,在投影仪前面,对待知识还是和孩子一样专注和热情,可爱极了。 忽然想到,Greg的主页上写着,“我才不是个不度假的教授,我2012年去冲浪了呢!”。 其实,每次选课都很头疼,时间太少,想学的课太多,只恨自己不能多读几年。我也知道上学期很不开心的时候, ...
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Java中的排序问题

Posted on 2017-01-08 | In Data Structure |
总结几种排序方法。 冒泡排序,选择排序,插入排序,Quick Sort,Merge Sort(continue..)... Simple sorting Bubble Sort 慢,但是简单。 Time complexity: O(N^2) 步骤: 1231. 每次只比较两个值。2. 如果左边的值大,就交换两个值。3. 移动大的值到右边。 举例: 123456789101112131415 ...
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不要温和地走进那个良夜。@CMU

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