полуструктурированных данных • Функции обработки текста на естественном языке • Потоковые запросы и complex event processing • Key-value витрины данных, инкрементальная агрегация в оперативке • Выполнение запросов

used for?  They simplify implementing:  Generators  Asynchronous I/O  Lazy computations  Event driven applications17 Coroutines  C++20 contains language additions to support coroutines  Standard undefined order of dynamic initializations  ❌  Static variables with constant initializers  ✔  Complex rules  Non-trivial for a reader to know whether it’s constant initialization or dynamic initialization

extensible way to specify where, how, and when work should happen … including some standard ones: an event loop, portable access to the system execution context, nursery for spawned work4 P2300: STD::EXECUTION pending_{nullptr}; static BOOL WINAPI consoleHandler(DWORD signal) { if (signal == CTRL_C_EVENT) { if (auto* pending = pending_.exchange(nullptr)) pending->complete(); } return control handler, and the destructor unregisters it.104 [[nodiscard]] auto event() const; }; auto ctrl_c_handler::event() const { return unifex::create_simple<>( [](R& rec)

simplicity.”Abstract “All software construction involves essential tasks, the fashioning of the complex conceptual structures that compose the abstract software entity, and accidental tasks, the representation complexity, conformity, changeability, and invisibility.”Complexity • Software entities are more complex for their size than perhaps any other human construct, because no two parts are alike • The complexity disasterConformity • Software people are not alone in facing complexity • Physics deals with terribly complex objects even at the fundamental level, but • Einstein argued there must simplified explanations,

lots of K8S production practice in Tencent Motivation https://kccncchina2018english.sched.com/event/FuLz/layers-of-isolation-in-kubernetes-tim-allclair-google Kubernetes has many layers of isolation vmm-vcpu: a hypervisor-agnostic abstraction for Virtual CPUs (vCPUs). rust-vmm • event-manager: abstractions for implementing event based systems. • linux-loader: parser and loader for vmlinux and bzImage images

可靠，故障自愈，低成本运维 HTAP Hybrid Transactional/Analytical Processing ，高性能图计算引 擎，预置 20 余种图计算算法 ，可扩展的分析引擎支持更复 杂的数据挖掘和机器学习场景 MPP Massively Parallel Processing 架构，大规模集群 分布式存储及并行计 算， Shared Nothing 模式支 持存储计算分离

ToolkitAbout Esri • We build mapping technology that our customers use to solve the world’s most complex challenges • We offer solutions to apply location-based analytics to business practices - Visualize

data this year till now 30 million users We use Clickhouse in our daily tasks Chanllenges Complex Datasource Chanllenges Frequent Updates Chanllenges Possible Solutions 1. Replay binlog/oplog

模拟数据规则 • 自动化测试 • Company's own protocol • Microservices • Multiple backend product line with complex upstream • Common testing platform 大公司抓包工具的需求 软件测试工具 • 模拟数据规则 • 自动化测试 • Supports http/htt

End Tests for Highly Stateful Features - Kuba Martin 2. Break / Your announcements (OpenSource, event etc.); Developer, engineer, lead lost & found || Grab coffee/beer/food; 3. Discussion Panel on