• How did we implement them in MSVC? • Part V: Time Zones • Overview of [time.zone] • IANA database challenges • Part VI: Conclusion7 Part I: Development Process8 Development Process • Implemented Time Zones ([time.zone]) • chrono now includes an interface for accessing the IANA time zone database. • This functionality requires several new types to be added to the library: • tzdb • tzdb_list 2:00 3:00 UTC America/ New York43 tzdb • This is a type that stores data from the time zone database. • Specifically, it contains data members: • string version; • vector

 Time Zones39 Time Zones  Time zone database:  = list of time zones, including things like daylight saving time descriptions  Access time zone database std::chrono::get_tzdb()  List all available available time zones: const auto& database { get_tzdb() }; for (const auto& timezone : database.zones) { cout << timezone.name() << endl; }40 Time Zones  Get a specific time zone: auto* brussels

T D e n g i n e t a o s X R u s t 使 用 TDengine: 时序数据库 TDengine 是一款开源、云原生的时序数据库（ Time Series Database ），专为物联网、工业互联网、金融、 IT 运维监控等场景设计并优化，具有极强的弹性伸缩能力。同时它还带有内建的缓存、流式计算、数据订阅等 系统功能，能大幅减少系统设计的复杂度，降低研发 MQTT, OPC, PI System 以及文 件直接导入  数据源导入时，可定义规则引擎 TDengine: 与上下游应用的关系 TDengine = Time-Series Database + Caching + Data Subscription + Stream Processing Shell: Command Line Interface High Performance io/crates/actix-web • OpenAPI：https://crates.io/crates/utoipa • Metrics: https://crates.io/crates/metrics • Database: https://crates.io/crates/sqlx • RPC: https://crates.io/crates/arrow-flight https://crates.io/crates/tonic

is the Next Stage ★ Blockchain ★ Decentralized Ledger Storage: MPT (Merkle Patricia Tree) ★ K-V database ★ Smart Contract ★ Serverless The Weapons Web3 Utilizes For mainstream tech stack, e. g. Ethereum on DATA and the OPENNESS of the data Core Difference Between ODA and Web3 DApp ➔If I opened my database to others, how would I get profits from my efforts, how should I run my business? ➔How to attract

雅 达 • 高可用 • 一致性（事 务） • 高性能 • 低资源消耗 • 易用 • 功能丰富 AtlasGraph 关键特性 云原生 Cloud-Native Graph Database 支持弹性伸缩，有 效利用硬件资源，高可用，高 可靠，故障自愈，低成本运维 HTAP Hybrid Transactional/Analytical Processing ，高性能图计算引 (Property Graph Queries in SQL) and the GQL standard • GQL Specific Capabilities •2019-09 – 39075 Database Language GQL project approved - this is the start •2021-11 – CD Ballot started •2022-02 – CD

amount of work; if possible move to your worker thread. • Gathering and saving data from/to your database is a prime example. Enabling Optimization Testing • npm i v8-natives --save • Edit your app/package

Vulnerability Scanning Job Service Admin Service Harbor components 3rd party components SQL Database Key/Value Storage Persistence components Local or Remote Storage (block, file, object) Users

16 MySQL Audit Logs to ClickHouse © 2018 Percona. 17 When to use MySQL Audit Logs Audit Database Access Have Limited Level of Details Allows extensive filtering by Object, User Account etc

16.8 Preview 3 • GitHub migration ongoing • Build system (native desktop), test suite, issue database • Goal: Complete C++20 in 2020 • No promises, but we're working hard; refers to repo only5 C++20