- Raftという分散合意アルゴリズムの紹介
- 論文: In Search of an Understandable Consensus ALgorithm (Extended Version)
- Raft三日目くらいの人が自分の理解をもとに(適当に)書いています
#NoSQLデータモデリング技法
原文:NoSQL Data Modeling Techniques « Highly Scalable Blog
I translated this article for study. contact matope[dot]ono[gmail] if any problem.
NoSQLデータベースはスケーラビリティ、パフォーマンス、一貫性といった様々な非機能要件から比較される。NoSQLのこの側面は実践と理論の両面からよく研究されている。ある種の非機能特性はNoSQLを利用する主な動機であり、NoSQLシステムによく適用されるCAP定理がそうであるように分散システムの基本的原則だからだ。一方で、NoSQLデータモデリングはあまり研究されておらず、リレーショナルデータベースに見られるようなシステマティックな理論に欠けている。本稿で、私はデータモデリングの視点からのNoSQLシステムファミリーの短い比較といくつかの共通するモデリングテクニックの要約を解説したい。
本稿をレビューして文法を清書してくれたDaniel Kirkdorfferに感謝したいと思う
This is not intended to be comprehensive or authoritative, just free online resources I've found valuable while learning more about Erlang.
https://web.archive.org/web/20070429181654/http://www.sics.se/~joe/
One of the very good design decisions Presto designers made is that it's loosely coupled from storages.
Presto is a distributed SQL executor engine, and doesn't manager schema or metadata of tables by itself. It doesn't manage read data from storage by itself. Those businesses are done by plugins called Connector. Presto comes with Hive connector built-in, which connects Hive's metastore and HDFS to Presto.
We can connect any storages into Presto by writing connector plugins.
Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.
Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.
To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.
| #include <iostream> | |
| #include <sstream> | |
| #include <string> | |
| #include <ctime> | |
| #include <glog/logging.h> | |
| #include <msgpack.hpp> | |
| #include <pficommon/text/json.h> | |
| #include <pficommon/network/socket.h> |
| # | |
| # A C Parser using the Parslet library. | |
| # | |
| # ANSI C Grammar: | |
| # | |
| # * http://www.lysator.liu.se/c/ANSI-C-grammar-l.html | |
| # * http://www.lysator.liu.se/c/ANSI-C-grammar-y.html | |
| # | |
| require 'parslet' |