## Containers and BPF: twagent story Andrey Ignatov, Facebook eBPF Summit ## twagent • a daemon - runs on every Facebook server • manages all Facebook containers - a part of the bigger TW system

## A Multithreaded, Transaction-Based Locking Strategy for Containers Bob Steagall CppCon 2020 KEWB COMPUTING ## Overview • Sharing a container among multiple threads • A motivating problem • Some required • Every message input requires a write operation to the history • Which uses one or more containers ## Motivating Problem – Reactive Message Processor ![Image](/uploads/documents/9/0/0/c/900c7a required • Every message input requires a write operation to a container • Which uses one or more containers ## • It must scale to multiple threads! ## Motivating Problem – Reactive Message Processor !

## Java 应用与开发 Servlet 编程 王晓东 wangxiaodong@ouc.edu.cn 计算机科学与技术系 November 13, 2018  ![Image](/uploads/documents/1/e/f 2. 掌握 Servlet 的概念、体系结构及生命周期管理基本原理。 3. 掌握 Servlet 的编程及配置方法，了解 Servlet 的在 Tomcat 服务器上的部署方式（war）。 大纲 Web 基础 Servlet 概述 Servlet 编程 Servlet 生命周期 Servlet 配置 Servlet 部署 Servlet 示例 ## Servlet 是主流 Web Web 框架的基础 JSP 和 JSF 都是建立在 Servlet 基础之上的，其他 Web 框架如 Struts、WebWork 和 Spring MVC 都是基于 Servlet。 接下来… Web 基础 Servlet 概述 Servlet 编程 Servlet 生命周期 Servlet 配置 Servlet 部署 Servlet 示例 ## 什么是 Web Web 本质上就是 Internet

Web on Servlet Stack Version 5.3.36-SNAPSHOT ## Table of Contents 1. Spring Web MVC ..... 2 1.1. DispatcherServlet ..... 2 1.1.1. Context Hierarchy ..... 4 1.1.2. Special Bean Types ..... 7 1 1.1.3. Web MVC Config ..... 8 1.1.4. Servlet Config ..... 9 1.1.5. Processing ..... 12 1.1.6. Path Matching ..... 14 1.1.7. Interception ..... 15 1.1.8. Exceptions ..... 15 Chain of Resolvers Themes ..... 23 1.1.12. Multipart Resolver ..... 23 Apache Commons FileUpload ..... 24 Servlet 3.0 ..... 24 1.1.13. Logging ..... 25 Sensitive Data ..... 25 1.2. Filters ..... 27 1

started ..... 9 8. Introducing Spring Boot ..... 10 9. System Requirements ..... 11 9.1. Servlet containers ..... 11 10. Installing Spring Boot ..... 12 10.1. Installation instructions for the Java 88 27.3. Embedded servlet container support ..... 89 Servlets, Filters, and listeners ..... 90 Registering Servlets, Filters, and listeners as Spring beans ..... 90 Servlet Context Initialization EmbeddedWebApplicationContext ..... 90 Customizing embedded servlet containers ..... 91 Programmatic customization ..... 91 Customizing Configurable Embedded Servlet Container directly ..... 92 JSP limitations

Advanced topics II. Getting started 8. Introducing Spring Boot 9. System Requirements Servlet containers 10. Installing Spring Boot Installation instructions for the Java developer support JAX-RS and Jersey Embedded servlet container support Servlets, Filters, and listeners Registering Servlets, Filters, and listeners as Spring beans Servlet Context Initialization Scanning for for Servlets, Filters, and listeners The EmbeddedWebApplicationContext Customizing embedded servlet containers Programmatic customization Customizing ConfigurableEmbeddedServletContainer directly JSP

Started ..... 9 8. Introducing Spring Boot ..... 10 9. System Requirements ..... 11 9.1. Servlet Containers ..... 11 10. Installing Spring Boot ..... 12 10.1. Installation Instructions for the Java 98 27.4. Embedded Servlet Container Support ..... 99 Servlets, Filters, and Listeners ..... 100 Registering Servlets, Filters, and Listeners as Spring Beans ..... 100 Servlet Context Initialization Listeners ..... 101 The ServletWebServerApplicationContext ..... 101 Customizing Embedded Servlet Containers ..... 101 Programmatic Customization ..... 102 Customizing ConfigurableServletWebServerFactory

started ..... 9 8. Introducing Spring Boot ..... 10 9. System Requirements ..... 11 9.1. Servlet containers ..... 11 10. Installing Spring Boot ..... 12 10.1. Installation instructions for the Java 88 27.3. Embedded servlet container support ..... 89 Servlets, Filters, and listeners ..... 90 Registering Servlets, Filters, and listeners as Spring beans ..... 90 Servlet Context Initialization EmbeddedWebApplicationContext ..... 90 Customizing embedded servlet containers ..... 91 Programmatic customization ..... 91 Customizing Configurable Embedded Servlet Container directly ..... 92 JSP limitations