mongo dbを半年ちょっと運用してみた
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1. MongoDB() 2. 1,000 DB36API50 MongoDB 3. MongoDB 4. MongoDB1MongoDB 5. MongoDB2 6. 7. MongoDB - doryokujin's bloghttp://doryokujin.hatenablog.jp/entry/20110519/1305737343 8. $or {elem: {$or: [{id: 1},{id: 2}, {id: 3}]}}$or$in$in