LevelDB源码剖析：如何设计一个高性能嵌入式数据库

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git clone --recurse-submodules https://github.com/google/leveldb.git

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#include <iostream>
#include <string>

#include "leveldb/db.h"

using namespace std;

int main() {
  leveldb::DB* db;
  leveldb::Options options;

  options.create_if_missing = true;

  leveldb::Status status = leveldb::DB::Open(options, "./leveldb_test", &db);

  if (!status.ok()) {
    cerr << status.ToString() << endl;
  }

  leveldb::WriteOptions writeOptions;

  db->Put(writeOptions, "hello", "world");
  string value;
  db->Get(leveldb::ReadOptions(), "hello", &value);
  cout << "Keyword value : " << value << endl;
  db->Put(writeOptions, "hello1", "nice");

  if (!status.ok()) {
    cerr << status.ToString() << endl;
  }

  return 0;
}