MongoDB Ruby 客戶(hù)端升級(jí)，性能大幅提升

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MongoDB Ruby 客戶(hù)端升級(jí)，性能大幅提升




最近MongoDB的Ruby客戶(hù)端進(jìn)行了一次升級(jí)，主打性能增強(qiáng)，官方的benchmark顯示速度達(dá)原來(lái)的2倍左右。下面是其官方原文及benchmark：

原地址：http://github.com/mongodb/mongo-ruby-driver/pull/3

The Ruby driver was quite inefficient with handling data. Strings (read from the network or passed by the user) were being unpacked into arrays all over the place and vice versa. We’ve modified the driver to work with strings instead of byte arrays as much as possible. Most notably: ByteBuffer has been rewritten to use a binary string as underlying storage object instead of an array.

The Ruby 1.8 implementation of BSON::OrderedHash was inefficient: it uses a Set even though it’s not necessary. We removed the dependency on Set and greatly improved OrderedHash’s 1.8 performance.

The end result is a driver that’s 274% faster on Ruby 1.8 and 204% faster on Ruby 1.9. We used the following benchmark:

requests = Mongo::Connection.new.db('foobar').collection('requests')
query = { :_id => "6d61bbc7e32795e7ace8b98e8e83961cb8e3ee53" }
40000.times do
    requests.find(query, :limit => -1) do |cursor|
        cursor.next_document
    end
endOriginal runtime: 74.0s (Ruby 1. / 33.9s (Ruby 1.9)
New runtime: 25.8s (Ruby 1. / 16.7s (Ruby 1.9)

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