siddontang.golib/leveldb

a leveldb wrapper for levigo

simplify use leveldb in go

Install

• download leveldb and snappy source, uncompress and set source directory in build_deps.sh
• . ./build_deps.sh

Performance

for better performance, I change some leveldb configurations to build:

• db/dbformat.h

    // static const int kL0_SlowdownWritesTrigger = 8;
    static const int kL0_SlowdownWritesTrigger = 16;
  
    // static const int kL0_StopWritesTrigger = 12;
    static const int kL0_StopWritesTrigger = 64;
  

• db/version_set.cc

    //static const int kTargetFileSize = 2 * 1048576;
    static const int kTargetFileSize = 32 * 1048576;
  
    //static const int64_t kMaxGrandParentOverlapBytes = 10 * kTargetFileSize;
    static const int64_t kMaxGrandParentOverlapBytes = 20 * kTargetFileSize;