Yesterday, we experienced a very long downtime. All told, we were down for about 11 hours, which is unacceptably long. It sucked for everyone (including our team – we all check in everyday, too). We know how frustrating this was for all of y... 続きを読む
発表者・参加者双方に有意義な勉強会:データマイニング+WEB勉強会@東京@doryokujinです。9/26(日)に行われました、第7回データマイニング+WEB勉強会@東京で発表してきました。@hamadakoichiさんによるまとめ(発表資料一覧)とTogetterも参考にして下さい。... 続きを読む
ここ2-3年ほど、いわゆる非SQL系データベースがホットな話題になってきています。このムーブメントを総称して「NoSQL (Not-only SQL)」と呼ばれることが多いようです。まるでSQLを否定しているかのような誤解を招きやすい用語ですが、かといってキー・バリュー... 続きを読む
Monday, September 13, 2010 MySQL versus MongoDB - fetch by secondary index This continues the silly benchmark series and compares performance from concurrent clients that fetch by secondary key. The previous post compared fetch by primary key... 続きを読む
Saturday, September 11, 2010 MySQL versus MongoDB - yet another silly benchmark This is yet another silly benchmark because the results are likely to be misused. The results probably do not matter to you. I like MongoDB. It has many things in... 続きを読む
Wave open source next steps: "Wave in a Box" Thursday, September 2, 2010 | 5:48 PM Since the announcement that we will discontinue development of Google Wave as a standalone product, many people have asked us about the future of the open sour... 続きを読む