谈如何构建易于拆分的单体应⽤ 郑渊 腾讯公司 ⾼级⼯程师 ⽬ 录 微服务架构的困境与突破 01 建模：通过表象看本质 02 基于go-kit构建易拆分的单体应⽤ 03 总结 04 微服务架构的困境与突破 第⼀部分 微服务架构的困境与突破 01 Monolith to Microservices To move from Monolithic to Microservices 业务架构图 ➢ 分层架构：变与不变 ➢ 实现⽅式：单体架构 vs 微服务架构 实战：基于go-kit构建易拆分的单体应⽤ 第三部分 实战：基于go-kit构建易于拆分的单体应⽤ 01 Go-kit Instruction https://github.com/go-kit/kit Go-kit is a programming toolkit for building microservices microservices (or elegant monoliths) in Go. Architecture and design : It is not an MVC framework. Instead, Go-kit services are laid out in three layers: transport endpoint servcie http/grpc/thrift...... safety

Dapr Runtime, 2) Dapr kit and 3) Components-Contrib. Results summarised 39 fuzzers developed All fuzzers added to Daprs OSS-Fuzz integration Fuzzing covers the Dapr Runtime, Kit and Components-Contrib com/dapr/kit/crypto 9 FuzzCryptoKeysJson github.com/dapr/kit/crypto 10 FuzzCryptoKeysRaw github.com/dapr/kit/crypto 11 FuzzSymmetric github.com/dapr/kit/crypto 12 FuzzAescbcaead github.com/dapr/kit/crypto/aescbcaead 8: FuzzCryptoKeysAny This fuzzer tests key parsing and serialization routines in github.com/dapr/kit/crypto. The fuzzer carries out three steps: It first creates a new key using the test case as the raw

............................................................... 24 Installing Firebird from a zip kit .................................................................................................. ........................................................ 25 Installing Classic Server from a zip kit .................................................................................. 25 Simplified setup before executing the installer for your selected Firebird kit or for installing the assembly yourself when installing Firebird from a zip kit. Tip If you haven't studied the previous section and are

............................................................................... 6 What is in the kit? ................................................................................................. the complete newcomer to a few essentials for getting off to a quick start with a Firebird binary kit. The guide first saw the light as Chapter 1 of the Using Firebird manual, sold on CD by IBPhoenix. rebird_(wip).pdf (PDF) The Embedded Server comes in a separate download package. What is in the kit? All of the kits contain all of the components needed to install the Firebird server: • The Firebird

................................................................................ 3 What is in the kit? ................................................................................................. the complete newcomer to a few essentials for getting off to a quick start with a Firebird binary kit. For the fine details of configuring and running your server and tuning your installation, please refer http://www.firebirdsql.org/manual/ (HTML) or http://www.firebirdsql.org/pdfmanual/ (PDF). What is in the kit? All of the kits contain all of the components needed to install the Firebird server: • The Firebird

............................................................................... 3 Que contient le kit ? ................................................................................................ http://www.firebirdsql.org/manual/ (HTML) ou http://www.firebirdsql.org/pdfmanual/ (PDF). Que contient le kit ? Tous les kits contiennent tous les composants nécessaires à l'installation du serveur Firebird : fichiers et répertoires contenus dans un fichier Winzip .zip), il est fortement recommandé d’ utiliser le kit de distribution la première fois que vous installez Firebird. Le script d’ installation exécutable

Repair Kit ◊ 组合方案 SQLite 恢复 ◊ 微信聊天记录只存客户端 ◊ SQLCipher 加密数据库 问题背景 ◊ SQLite 概率性损坏 ◊ 1/20,000 ~ 1/10,000 ◊ 256MB ~1%，1GB ~1‰ ◊ 设备断电、kernel crash、空间不足 问题背景 ◊ 问题背景 ◊ 常规做法 ◊ 数据备份 ◊ Repair Kit ◊ 组合方案 遇到错误，跳到下一个表 .dump 用于恢复 ◊ 成功率仅 ~30% ◊ 打不开 DB ◊ 打开了读不出数据 .dump 成功率 ◊ 问题背景 ◊ 常规做法 ◊ 数据备份 ◊ Repair Kit ◊ 组合方案 SQLite 恢复 ◊ 主要考虑因素 ◊ 恢复成功率 ◊ 空间大小 ◊ 性能 ◊ 加密 数据备份 备选方案 方案 优点 缺点 文件复制 + 压缩 实现简单 非原子操作 13916 1088 1545 72% 28% 恢复成功 恢复失败 线上恢复率 备份未覆盖 备份损坏 时效问题 ◊ 问题背景 ◊ 常规做法 ◊ 数据备份 ◊ Repair Kit ◊ 组合方案 SQLite 恢复 SQLite 损坏情况 41% 59% 表损坏 初始化失败 可以打开 数据部分损坏 无法打开 数据可能没坏 SQLite 文件格式 1 2

the complete newcomer to a few essentials for getting off to a quick start with a Firebird binary kit. The guide first saw the light as Chapter 1 of the Using Firebird manual, sold on CD by IBPhoenix bbbb-p-windows-x64.exe Windows executable installer, 64 bits Firebird-5.0.0.bbbb-p-windows-x64.zip Windows zip kit for manual installation Firebird-5.0.0.bbbb-p-windows-x86.exe Windows executable installer, 32 bits or decompressing a .zip archive — it is strongly recommended that you use the distributed release kit (.exe for Windows, .tar.gz for Linux), especially if this is the first time you install Firebird.