Method Get

example/redis_c++/redis_server.cpp:76–88

    }

    bool Get(const std::string& db_name, const std::string& key, std::string* value) {
        int slot = butil::crc32c::Value(key.c_str(), key.size()) % kHashSlotNum;
        _mutex[slot].lock();
        auto& kv = _db_map[db_name];
        auto it = kv[slot].find(key);
        if (it == kv[slot].end()) {
            _mutex[slot].unlock();
            return false;
        }
        *value = it->second;
        _mutex[slot].unlock();
        return true;
    }

private:
    const static int kHashSlotNum = 32;