贾亮的专栏

download source code from here extract it and compile $ ./configure --help ;list all options $ ./configure --disable-automatic-init-and-cleanup $ make $ sudo make install ; or su to root, then make in

run command from Java driver for example:eval command: { eval: <function>, args: [ <arg1>, <arg2> ... ], nolock: <boolean> }map to java ==>Document command = new Document(); command.put("eval",

1. insertDocument :: caused by :: 11000 E11000 duplicate key error index: perf_test.test.$_id_  dup key: { : ObjectId('597edae0faa2ec5e6859e7a3') } code is wrong, there have two line to insert the sa

show command show dbs use <db name> show collections db.<collectionName>.find() list help for collection db.<collectionName>.help() create index > db.test.getIndexes() [ { "v" :

start mongod without –auth parameter, disable auth connect to this instance with mongo, then create a super user restart mongod with –auth $ mongo --port 27017 -u siteUserAdmin -p password --authentica

After you installed C driver from source, it print below help message, you should take care.Libraries have been installed in: /usr/local/libIf you ever happen to want to link against installed libra

C++ 11 driver install C driver before your install C++ driver download from here and extract it to your directory compile $ cd mongo-cxx-driver-r3.1.2/build $ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_I

config your depends manager(maven etc), like this or download jar package from here, add this jar file to your build path write your sample code like this run and test it, please make sure your mongod

install MongoDB from tar in Linux download tar file from here extract it to any directory, add install/bin PATH with export create data directory mkdir -p /data/db start mongod server, when everything

mapReduce可是实现增量的计算，但是它有以下问题： 1. 使用javascript写成，不便于debug 2. 帮助很少 3. 性能不如aggregate 4. 你可以在mongo shell中使用 - interpreterVersion() ordb.serverBuildInfo() - 来获得mongo的 javascriptEngine 5. 在3.2中，javas