Architecture 05 Operating Environments 08 Kernel Innovations 10 Cloud Base 14 Enhanced Features 22 Community Governance 26 Copyright Description 33 Trademarks 33 Appendixes 33 CONTENTS openEuler 21.09 Architecture 05 Operating Environments 08 Kernel Innovations 10 Cloud Base 14 Enhanced Features 22 Community Governance 26 Copyright Description 33 Trademarks 33 Appendixes 33 01/ Introduction openEuler convergence of OT and information and communications technology (ICT). The openEuler open source community is a portal available to global developers, with the goal of building an open, diversified, and

/ Kernel Innovations 05 / Cloud Base 06 / Flourishing Ecosystem 07 / Enhanced Features 08 / Community Governance 09 / Copyright Description 10 / Trademarks 11 / Appendixes 01 04 07 09 15 openEuler community, global developers join hands to build an open, diversified, and architecture-inclusive software innovation ecosystem. openEuler is an innovative platform driven by community collaboration hardware and software application ecosystem. On December 31, 2019, the openEuler open source OS community was officially established. It was initiated for diversified computing architectures. On March

分析手段和调查报告等多种形式，绘制一份 2021 年中国开源世界的地图。 In early 2016, KaiYuanShe released the 2015 China Open Source Community Attendance Survey Report. In the following years, it continued to release developer survey reports information (including work information and developer technical information) and open source community participation. 通过 44 项左右问题的统计调查与分析，我们希望能够还原出当前中国开源社区的真实现状， 从而为开源的后来人提供权威的参考。 Through the statistical open source community, so as to provide an authoritative reference for the later generations of open source. 调查对象 ：覆盖开发者、社区成员、贡献者、学生、政府企业管理人员 Target: Covering developers, community members, contributors

For Companies & Organisations ● Impact on development and direction ● Sense of membership in a community ● Save on expensive resources and go to market ● Ability to focus on what differentiates yourself Increased vision, revenue and market share Why open source ? For developers ● Not alone, part of a community ● Personal satisfaction ● Sense of accomplishment ● Innovation: you do it ! ● Tinker ! Why Open source community Walled Garden (company community) “All your base are belong to us.” Open source community Meritocracy (open community) “Out of chaos comes order.” Open source community Building

discretion of Alibaba. Presentation Agenda A Brief History of Apache RocketMQ Apache RocketMQ Community Cloud Native OpenMessaging Standard Apache RocketMQ 5.0 5 About Me Apache RocketMQ Co-Creator vongosling@apache.org Presentation Agenda A Brief History of Apache RocketMQ Apache RocketMQ Community Cloud Native OpenMessaging Standard Apache RocketMQ 5.0 7 A Brief History of Apache RocketMQ A Brief History of Apache RocketMQ Apache RocketMQ Community Cloud Native OpenMessaging Standard Apache RocketMQ 5.0 Apache RocketMQ Community Apache, a patchy Web server Apache, well-known for

鏈接世界的 Python Community and introduction to Python Software Foundation Noah Chen https://fossasia.org/ Thank You all staff/volunteer/speakers/sponsors/participants in PyCon China 2019 Noah Chen pycons around Asia. PSF managing member EuroPython Society member a pythonista, a open source community man, an audio and data engineer, about me: https://python.org/psf-landing/ “The Mission of programming language; and to support and facilitate the growth of a diverse and international community of Python programmers” Mission of PSF The EuroPython Society’s mission is to further the use

一个不错的选择。 访问该地址 https://openeuler.org/zh/community/mailing-list/ 找到社区可用的邮件列表，请根据您的兴趣参照 下面步骤去加入某个邮件列表。 这里有两种加入方式： 网页 ① 点击 https://openeuler.org/zh/community/mailing-list/ 中的列表名字进入订阅页面。 ② 输入订阅邮箱并点击“订阅”按钮。 对应项目的首页地址。通常情况下，在该项目首页地址的 README.md 文件中，可以找到该项目所属的 SIG 信息、 交流方式、成员和联系方式等。 如果上述两种方式都定位不到您感兴趣的 SIG，您可以向 community@openeuler.org 发求助邮件。建议您在邮件列表 内用“【开发过程疑问】”作为标题，在内容中写出你寻找的 SIG 或项目的特征，我们会为您提供帮助。 开始贡献 找一个 Issue 列表：在您感兴趣的项目的首页内（Gitee 上的项目的 Repository）的工具栏，点击“Issues”， 您可以找到该 SIG 的 Issue 列表（如 Community 团队的 Issue 列表地址为 https://gitee.com/openeuler/ community/issues）。 • 找到愿意处理的 Issue：如果您愿意处理其中的一个 Issue，可以将它分配给自己。只需要在评论框内输入

一个不错的选择。 访问该地址 https://openeuler.org/zh/community/mailing-list/ 找到社区可用的邮件列表，请根据您的兴趣 参照下面步骤去加入某个邮件列表。 这里有两种加入方式： 网页 ① 点击 https://openeuler.org/zh/community/mailing-list/ 中的列表名字进入订阅页面。 ② 输入订阅邮箱并点击“订阅”按钮。 openEuler 21.03 技术白皮书 openEuler WHITE PAPER 您可以找到该 SIG 的 Issue 列表（如 Community 团队的 Issue 列表地址为 https://gitee.com/openeuler/ community/issues）。 • 找到愿意处理的 Issue：如果您愿意处理其中的一个 Issue，可以将它分配给自己。只需要在评论框内输入 /assign 或其项目的特定社区目录中。如果您未找到相关 信息，或者对相关信息有疑问，可以在该 SIG 内提交 Issue，或者把问题或疑问发送到该项目所属 SIG 的邮件列表。如 果您认为长时间没有得到回应，可以向 community@openeuler.org 求助。 • 下载代码和拉分支 如果要参与代码贡献，您还需要了解如何在 Gitee 下载代码，通过 PR 合入代码等。该托管平台的使用方法类似 GitHub，如果您以前使用

storage Design objectives Achievements in CURVE Key designs used by CURVE CURVE Roadmap CURVE Community You can take awayWhy develop Storage requirements ● Hardware requirements ○ more CPU cores, storage � Design objectives Achievements in CURVE Key designs used by CURVE CURVE Roadmap CURVE Community You can take awayDesign objectives App scenario & requires ● Database scenario ● Elastic block storage Design objectives � Achievements in CURVE Key designs used by CURVE CURVE Roadmap CURVE Community You can take awayPerformance in database scenario Solution architecture ● CURVE provides underlying

TiKV, TiSpark Agenda • Design Goals • Architecture Evolution • Lessons Learned • Open Source Community Design Goals Goal 1: Horizontal Scalability Goal 2: High Availability Goal 3: ACID Transaction Jira/Confluence How to tuning the system? 玄学调优 Metrics System Matters • 400+ metrics items Open Source Community Why open source • Releasing your product as an open source project will significantly improve to and enjoy the benefit from the open source community • rust-prometheus, rust-grpc, raft-rs • go-mysql, go-hbase • etcd, rocksdb The TiDB Community •Stars •TiDB: 12,700+ •TiKV: ~3000 •Contributors