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前回Elasticfox Firefox Extension for Amazon EC2を利用してインスタンスを起動しました。 しかし、これに対してPuTTYでアクセスするには一手間必要になります。 PuTTY PuTTY ごった煮版 まずはアクセスするために鍵を作る必要があります。 puttygen.exeを起動します。 鍵のインポートを行います。 起動編 その1 で作成した.ppkファイルのことです。 それを選択すると鍵が生成されます。 もしも出来なかった場合は 起動編 その1を参考にもう一度。 問題が無ければ秘密鍵の保存を行います。 パスワードは…いまいちよく分かりません;p さて、いよいよPuTTYを起動して先ほど起動したインスタンスにアクセスしてみます! ちょっと、その前に設定を。 先ほどのFirefox Elasticfoxに戻って作業を行います。 上のタブの部分からSecu
This section is a high level overview of concepts, technology choices, and implementation details that are at work in Riak. Basics Languages Used Written in Erlang and C primarily with a small amount of Javascript. Clients Basho supported Drivers are available for Erlang, Python, Java, PHP, Javascript, and Ruby. Take a more in depth look at the Client Libraries History Riak is based on technology
AWS News Blog Introducing Amazon Virtual Private Cloud (VPC) Amazon Virtual Private Cloud (Amazon VPC) lets you create your own logically isolated set of Amazon EC2 instances and connect it to your existing network using an IPsec VPN connection. This new offering lets you take advantage of the low cost and flexibility of AWS while leveraging the investment you have already made in your IT infrastr
It is a well-known fact that the bottlenecks of MySQL does not exist in its storage engines, but rather in the core, for example, its parser and execution planner. Last weekend I started to wonder how fast MySQL could be if those bottlenecks were skipped. Not being able to stop my curiousity, I started adding memcached proctol support to MySQL as a UDF. And that is Mycached. From what I unders
Confessions from a Massive, Nightmarish Data Project Back in 2000, I went to France to build a genomics platform. A biotech hired me to combine their in-house genome data with that of public repositories like Genbank. The problem was the repositories, all with millions of records, each had their own format. It sounded like a massive, nightmarish data interoperability project. And an ideal fit for
Observation: Co-routines are to state machines what recursion is to stacks When you have to traverse some sort of a nested data structure (say, a binary tree), one approach is to create a stack that remembers where in the tree you are. Another, much more elegant approach, is to write the function recursively. A recursive function employs the machine stack used to implicitly implement function call
Consensus Protocol 2009-08-25 (Tue) 7:29 研究 Consensus Protocolについて分かりやすいブログ記事が有ったので、メモ。Clouderaの方みたいです。 A Brief Tour of FLP Impossibility A brief history of Consensus, 2PC and Transaction Commit Consensus Protocols: Two-Phase Commit Consensus Protocols: Three-phase Commit Consensus with lossy links: Establishing a TCP connection Consensus Protocols: Paxos Consensus Protocols: A Paxos Implementatio
Introduction In a typical Hadoop MapReduce job, input files are read from HDFS. Data are usually compressed to reduce the file sizes. After decompression, serialized bytes are transformed into Java objects before being passed to a user-defined map() function. Conversely, output records are serialized, compressed, and eventually pushed back to HDFS. This seemingly simple, two-way process is in fact
Most of today’s up and coming key-value stores are more than just simple key-value stores. You saw this when we looked at Tokyo Cabinet which, in addition to simple key-value capabilities, adds more sophisticated abilities, such as database-like tables. In this post we’ll look at Cassandra – a modern key-value store that continues this trend. Cassandra was originally developed by Facebook and rele
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