互联网企业的发展模式 Web3? So-called Web3 ？ Where is the Next Stage ★ Blockchain ★ Decentralized Ledger Storage: MPT (Merkle Patricia Tree) ★ K-V database ★ Smart Contract ★ Serverless The Weapons Web3 Utilizes general cases • Limites of On-chain VM computation • Limites of MPT • Limites of K-V db Problems of Web3: Technical Viewpoint Financial Model: Account=>Balance ➔ Relatively closed dataset, linear increasement Road to Open Web ➔ From the user side, it looks like just the traditional Internet app ➔ But everyone have the chance to download/sync all open data from this platform ➔ On the server side, it is

service() doGet() doPost() Get Request Post Request Response Response Web Server HttpServlet subclass 注意： 方法由 HttpServlet 的子类实现

monitoring: квантили • Geospatial: geoDistance, pointInPolygon, H3, S2 ClickHouse — гибкая система 8 Web analytics Mobile app analytics Ads analytics Realtime bidding E-commerce analytics Retail Games analytics Better memory usage • No issues with GC and Java heap 2. Может запускаться встроенным в clickhouse-server • Нет необходимости в отдельном сервисе Разработчик: Alexander Sapin. Данные необходимо вставлять

modified request • 模拟数据规则 • 自动化测试 • https://github.com/wasmmock/ wasm_mock_server • 用 rust 打包所有测试需求 Wasm mock server Why use rust ？ Software testing tool • 模拟数据规则 • 自动化测试 • Company's own protocol platform • Support HTTP POST wasm API • Support websocket stand in for wasm API 抓包 - Wasm Mock Server wasm 工具 does not invent the wheel 软件测试工具 • 模拟数据规则 • 自动化测试 ModifyRequest(req *http.Request) error{ Response) error{ … res_,err:=wasm.Invoke(ctx,res.url.path, req_payload) … res = res_ } Wasm mock server 用了 Google martian 软件测试工具 • Websocket TCP mitm 例 子 extern crate wapc_guest as guest; use guest::prelude::*;

oDebugging JavaScript Why are we here? How did NativeScript come to be? Swift/Obj-C Java .NET We ❤ Web. But… We need: • Better offline support • Access to all device APIs • Home screen availability discovery • … Hybrid "Promise" 100% Web 100% Nativ e Hybri d Reach Code/Skill Reuse Richness Premium experience Device APIs Best of both? Compromises. Mobile Web - PWA Hybrid Native “1st Gen” apps for iOS & Android o Use web skills o JS, CSS, XML-based markup o Write once, run everywhere o Share 100% code between iOS/Android o Share 80% code with web o Reuse popular plugins from NodeJS/iOS/Android

Request Cert (SDS)) 3. CSR Auth: JWT 4. Cert signed with SPIFFE format Istio-proxy CA server #IstioCon Istio identity – how to get configuration ● Format: "spiffe:///ns/server side mTLS mTLS in Istio - PeerAuthenticati on Using ingress port and ingress host to send request: peer-authentication only defines behavior of server side and auto-mTLS is on by default Access productpage 1) Apply peer-authentication to enable server side mTLS mTLS in Istio - PeerAuthenticati

Files High Compression (column store + LZ4) • Typically 100x faster than MySQL on Single Server • Semi-Linear Scalability to 100s of nodes High Performance © 2018 Percona. 8 MySQL Wire User Account etc Has information about Connection Events Available in MySQL Enterprise, Percona Server, MariaDB © 2018 Percona. 18 Audit Log Record Example {"audit_record":{"name":"Query","record localhost []","host":"localhost","os_user":"","ip":"","db":"sbtest"}} © 2018 Percona. 19 Percona Server Configuration • Install Audit Plugin • INSTALL PLUGIN audit_log SONAME 'audit_log.so'; • Configure

Analytics, ML App Python/Matlab/R Java/C/C++/Restful IoT Application Visualization Tool Grafana Web Based Management Tool 21,400+ 4,600+ 18,500+ 社区版开源 2019.07.12 集群版开源 2020.08.03 云原生版开源 2022.08.13 io/crates/tokio-cron-scheduler • MPMC Channel: https://crates.io/crates/flume • Web Service: • Framework: https://crates.io/crates/actix-web • OpenAPI：https://crates.io/crates/utoipa • Metrics: https://crates.io/crates/metrics

CPU the bottleneck • 1 CPU handles 500,000 pps • Make LB the bottleneck • The target server and client server shall be powerful enough Performance measurement Test topology Test result Service type

image: yandex/clickhouse-server:19.6.2.11 Всегда указывате версию явно. НЕ НАДО использовать тег :latest Расширенные настройки ● ClickHouse settings (profile, server settings) configuration: