c4pt0r

db=mysql
driver=com.mysql.jdbc.Driver
conn=jdbc:mysql://0.0.0.0:6000/tpcc?useSSL=false&useServerPrepStmts=true&useConfigs=maxPerformance&rewriteBatchedStatements=false&callableStmtCacheSize=1000&prepStmtCacheSize=1000&sessionVariables=tidb_batch_commit=1
user=root
password=
 
warehouses=1000
loadWorkers=32
 
terminals=500

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diff --git a/conf/tidb.yml b/conf/tidb.yml
index d7e1d23..6e15aab 100644
--- a/conf/tidb.yml
+++ b/conf/tidb.yml
@@ -42,7 +42,7 @@ global:
 
 log:
   # Log level: debug, info, warn, error, fatal.
-  # level: "info"
+  level: "error"

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name: test
task-mode: all
is-sharding: false
meta-schema: "dm_meta"
remove-meta: false
enable-heartbeat: false
ignore-checking-items: ["dump_privilege", "replication_privilege"]

target-database:
  host: ""

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{
	"comment": "",
	"ignore": "test",
	"package": [
		{
			"checksumSHA1": "2sLgks1Fi3Dek1svURoHiI95gAw=",
			"origin": "github.com/pingcap/tidb/vendor/github.com/BurntSushi/toml",
			"path": "github.com/BurntSushi/toml",
			"revision": "418cdf2308c8ebedadbf356142f9afbab9aea111",
			"revisionTime": "2018-09-03T23:56:42Z"

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// A simple demo of TiKV's prefix seek API

/*
$./benchseek
INFO[0000] [pd] create pd client with endpoints [localhost:2379]
INFO[0000] [pd] leader switches to: http://127.0.0.1:2379, previous:
INFO[0000] [pd] init cluster id 6508961674812833664
hello_1
hello_2
hello_3

c4pt0r

package main

import (
	"encoding/json"
	"errors"
	"flag"
	"fmt"
	"math/rand"
	"time"

c4pt0r

2016 数据库圈盘点

我简单说一下今年我觉得印象比较深刻的几个事情：

1.  Facebook 和 Percona 合作 MyRocks 正式进入市场
2.  MySQL Group Replication 发布, 基于选举的 Replication 方案正式进场
3.  Hive 2.0 的发布，新的 feature 和性能提升让我蛮惊艳的
4.  RethinkDB 的落幕
5. CockacheDB 、 TiDB 这类的 NewSQL 在社区展露头角
6. SycallaDB 的发布，让我看到了性能提升上的一些新的思路

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inline bool Zlib_Compress(const CompressionOptions& opts,
                          uint32_t compress_format_version, const char* input,
                          size_t length, ::std::string* output,
                          const Slice& compression_dict = Slice()) {
#ifdef ZLIB
  if (length > std::numeric_limits<uint32_t>::max()) {
    // Can't compress more than 4GB
    return false;
  }

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##章程

---

使命 (Mission)

China Open Infrastructure Software Foundation，以下简称 COISF 或 COI，致力于促进和发展中国的新一代开源基础软件， COISF 的使命是：促进中国下一代开源互联网基础软件生态系统的发展。

新一代的开源基础设施需要具备以下的条件：

1. Scale：面向云和更大规模的分布式系统设计，系统高度自治和自动化。

c4pt0r

#!/usr/bin/env python
import os
import math

pts = [(1,1), (0,0), (0.5, 0)]

def distance(p, p2):
    return math.sqrt((p[0]-p2[0])*(p[0]-p2[0]) + (p[1]-p2[1])*(p[1]-p2[1]))

def nearest(s, e):