## 感谢聆听！ 唯品会开源弹性调度系统 Saturn的“前世今生” 邱戈川（了哥） 微信公众号： VIPDOCK  黄国钦 (Chembo) 唯品会高级开发工程师 ## 内容主题 为何而生 GitHub 有女初长成 女大须嫁 女大须嫁 https://github.com/vipshop/Saturn 瓜熟蒂落 婆媳关系 ## 为何而生  ## 传统调度系统的问题、产品的定位与选型 ## 需要解决的问题 异构 / 多语言难以支持 缺乏统一监控、统一管理 统一配置、统一监控、统一管理 ## V IP弹性调度系统 -- Saturn ## Saturn 开源地址：Github.com/vipshop/Saturn ## 体系中的定位 服务化框OSP 开发框架Venus 消息队列 VMS 全链路监控 Mercury 统一日志平台 dragonfly 任务调度平台 Saturn 统一配置中心 CfgCenter 统一鉴权中心 AuthCenter

design of conventional data-flow analysis and symbolic execution, such as the IFDS framework [39], SATURN [53], and CALYSTO [3], propagate dataflow facts to all program points following control-flow paths problems [9, 38, 47, 49]. For example, a recent report [3] observes that it takes 6 to 11 hours for SATURN [53] and CALYSTO [3] to check only one property (null pointer dereference, a typical source-sink known to easily suffer from scalability issues, especially for whole-program analysis. For example, SATURN [3] is reported to spend more than 23 hours in checking memory leaks for a 5MLoC code base. Our experiment

e/p15_1.jpg) ## 市面上的一些任务系统 1. Azkaban 2. Chronos 3. Airflow 4. dkron 5. swoole-crontab 6. Saturn ## Azkaban 批量工作流任务调度器(Hadoop) 1. 提供功能清晰，简单易用的 Web UI 界面 2. 提供 job 配置文件快速建立任务和任务之间的依赖关系 3. 提供模块化和可插拔的插件机制，原生支持

^{ \mathrm { T M } } $ gunicorn Celery elastic GOPHER CHINA 2020 Shopee供应链现在的技术栈 Saturn kubernetes RabbitMQ Wprowadzenie kafka ceph Celery gunicorn elastic GOPHER CHINA 2020

[Image](/uploads/documents/6/a/7/4/6a7410ca18f9435cd69c2097b329e97e/p29_2.jpg) https://github.com/vipshop/Saturn https://github.com/vipshop/vjtools Pallas一站式检索平台 OSP Coming soon in Jan Coming soon in 2019

small teams can operate in the cloud on their own. — Florian Heubeck, Principal Engineer, MediaMarkt Saturn ## Benefits of GitOps for platform building Here are the top benefits of using GitOps to build

OSP 全链路跟踪 Mercury 配置中心 CfgCenter 消息队列 VMS Venus体系 服务框架 API网关 Janus 注册中心ZK 基础中间件 任务调度 Saturn 中央文档系统 DocCenter 秒级监控 Hummer 服务治理 Service-center 统一检索平台 Pallas 数据服务平台 Asgard ## OSP服务化远程调用机制

count for numbers of any size: let approximateCount = 62 let countedThings = "moons orbiting Saturn" let naturalCount: String switch approximateCount { case 0: naturalCount = "no" $ (naturalCount) $ (countedThings).) $ " // Prints "There are dozens of moons orbiting Saturn." In the above example, approximateCount is evaluated in a switch statement. Each case compares single line, separated by commas: enum Planet { case mercury, venus, earth, mars, jupiter, saturn, uranus, neptune } Each enumeration definition defines a new type. Like other types in Swift, their

a single line, separated by commas: 1 enum Planet { 2 case Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune 3 } Each enumeration definition defines a brand new type. Like other types in Swift planet's order from the sun: enum Planet: Int { case Mercury = 1, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune } Auto-incrementation means that Planet.Venus has a raw value of 2, and so on.

from the image window. I got another image from APOD [APOD06]. It is pretty big. (Not as big as Saturn though) You can see in the dialog below, it is 2241 x 1548 pixels. Figure 3.25: Dialog for Image July 10), http://antwrp.gsfc.nasa.gov/apod/ap020710.html. [APOD04] Astronomy Picture of the Day - Saturn: Lord of the Rings (2002 February 15), http://antwrp.gsfc.nasa.gov/apod/ap020215.html. [APOD05]