MongoDB优化心得分享

eval(function () {
  var infos = [];
  var collNames = db.getCollectionNames();
  for (var i = 0; i < collNames.length; i++) {
    var collName = collNames[i];
    var collSize = db.getCollection(collName).count();
    if (collSize > 1000000 && collName.indexOf("info_")==0) {
     db.getCollection(collName).ensureIndex({publishDate:-1,blendedScore:-1,publishTime:-1,isRubbish:1},{name:"ScoreSortIdx",background:true});
      db.getCollection(collName).ensureIndex({similarNum:-1,publishTime:-1,isRubbish:1},{name:"HotSortIdx",background:true});
      db.getCollection(collName).ensureIndex({publishTime:-1,isRubbish:1},{name:"TimeSortIdx",background:true});
      infos.push("name:" + collName + "索引创建成功");
    }
  }
  return infos;
}());