数据库管理系统ParElastic：打破常规 扩展云端MySQL
众所周知，如果谈到云计算，扩展性也往往会出现在同一个句子中。但是绝少会提及数据库，更别说是MySQL数据库。一家波士顿的创业公司 ParElastic希望改变这一现状，它刚刚获得来自General Catalyst Partners（ 前VMware CTO Steve Herrod的新“东家”）引导的
众所周知，如果谈到云计算，扩展性也往往会出现在同一个句子中。但是绝少会提及数据库，更别说是MySQL数据库。一家波士顿的创业公司
ParElastic希望改变这一现状，它刚刚获得来自General Catalyst Partners（
前VMware CTO Steve Herrod的新“东家”）引导的570万美元的A轮融资。
ParElastic位于应用程序与底层数据库之间，而且无需复杂的分片操作就可以进行扩展操作，甚至可以把数据库迁移到一个更大的服务器上运行。公司创始人和首席执行官Ken
Rugg告诉GigaOM的记者
Derrick Harris，从架构上讲，ParElastic数据库虚拟化引擎就像是一个并行的数据库系统，但是它在功能上是作为一个中间件，同时管理多个数据库实例，设计的初衷更偏向于操作而不是分析型的工作负载。
诚然，NoSQL数据库也在扩展性方面不断的努力，NewSQL则是致力赋予SQL数据库横向扩展的能力，甚至很多数据库已经作为云服务提供给了用户。然而，Rugg解释道，这些和ParElastic所从事的工作有很大的不同， 如果用户选择了NoSQL或者NewSQL，这就意味着需要部署一个全新的数据库，而且可能重写一些应用的代码。ParElastic的软件仅仅是是覆盖用户现有的云数据库。Rugg表示，在早期AWS的用户中，大约有一半都是使用标准版的MySQL版本，其余的则分布在Rackspace，Joyent和LiquidWeb等云服务供应商之中。
一些ParElastic的用户实际上是管理现有的SQL服务，像亚马逊的关系型数据库服务或者Google Cloud SQL，有人甚至用它来管理内部的数据库环境。Rugg指出，从技术上来讲，ParElastic是可以管理跨云平台的数据库，但这必然会导致服务的延迟，“我们并不建议这么做”。 Rugg认为，ParElastic技术的最大的受益者除了该公司之外还有AWS，这也是世界上使用最广泛的云平台。不过，当用户单一的数据库实例受到限制时，亚马逊一般的解决方案就是告知用户进行分片或者迁移到DynamoDB平台，“这点对那些想迁移到亚马逊云平台的用户来说，并不是很友好”Rugg说道。近一步而言，某些云服务供应商提供了比AWS更好的CPU，IO和网络性能（Rugg表示Rackspace在IO性能上就表现非常好），但是综合来看，AWS是一个很好的选择，尤其ParElastic帮助AWS弥补了自身的一些短板之后，就能以较低的成本提供更好的性能服务。
ParElastic现有的投资者还包括Point Judith Capital, CommonAngels以及LaunchCapital，该轮融资之后，公司的风险资本总额达到870万美元。 （文/王鹏，审校/仲浩）
GigaOM
| Cloud Edge：2013年国际“云先锋”系列报道 | |||||
| 序号 | 公司名称 | 成立时间 | CEO/CTO | 风险投资 | 公司产品/方向 |
|---|---|---|---|---|---|
| 1. | HStreaming | 2011年 | Jana Uhlig | $ 1M （B） | 实时Hadoop系统 |
| 2. |
CitusData
|
2012年
|
Matt Ocko
|
|
CitusDB
|
| 3. |
Backblaze
|
2009年
|
Gleb Budman
|
|
开源存储硬件
|
| 4. |
Kickboard
|
2009年 | Jennifer Medberry
|
$2.8M（A）
|
Kickboard（数据分析）
|
| 5. |
Elasticsearch
|
2012年
|
Shay Banon
|
$24 M（B）
|
开源搜索引擎
|
| 6. |
Appcore
|
2008年 | Jeff Tegethoff
|
$6M （B）
|
企业内部部署IaaS平台
|
| 7. |
Pertino
|
2011年 | Craig Elliott
|
$20 M（B）
|
软件定义网络（SDN）
|
| 8. | SwiftStack | 2011年 | Joe Arnold | $6.1M（A） | 软件定义存储 |
| 9. |
Spiral Genetics
|
2009年 | Adina Mangubat | $3M（A）
|
DNA序列数据分析平台 |
| 10. |
DNNResearch
|
2012年 | Geoffrey Hinton |
|
深度学习 |
| 11. |
AppNeta
|
2011年 | Jim Melvin | $16M（C）
|
应用性能管理（APM）
|
| 12. |
Concurrent
|
2008年 | Chris K. Wensel | $4M（A）
|
Java大数据框架
|
| 13. |
AirWatch
|
2003年 | John Marshall
|
$200M（A）
|
移动设备管理
|
| 14. |
Pluribus
|
2012年 | Robert Drost
|
$44M（C）
|
虚拟化网络 |
| 15. |
Bina Technology
|
2006年 | Narges Bani Asadi
|
$6.5M（B）
|
基因测序平台 |
| 16. |
Sociocast
|
2010年 | Albert Azout
|
$1M（B）
|
数据预测分析 |
| 17. |
ParElastic
|
2010年
|
Ken Rugg
|
$5.7M（A）
|
数据库虚拟化引擎
|
“ 第五届中国云计算大会 ”将于2013年6月5-7日在北京国家会议中心隆重举行。猛击报名！
相关活动已经火热启动：
2013中国云计算大调查，每周大奖等你拿！ “
Innovation Cloud 2013云创新产品与应用项目征集，欢迎研发者、团队和创业企业参加！
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