Enterprise(d) Tomcat & httpd
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The document discusses new features in Apache HTTP Server (httpd) version 2.4 and Apache Tomcat versions 7 and 8. Some key improvements in httpd 2.4 include better performance, optimizations to make it "cloud ready" with asynchronous I/O and a new multi-processing module. Tomcat 7 offers Servlet 3.0 compliance and improved startup time. Tomcat 8 features Servlet 3.1 with non-blocking I/O, HTTP protocol upgrades, and support for SPDY and web sockets. The presentation covers using httpd as a reverse proxy and load balancer for backend servers like Tomcat.
![References
• [1] httpd usage according to W3Tech
• Apache and Tomcat logos from
apache.org
• Mladen Turk's httpd and Tomcat
presentations](https://image.slidesharecdn.com/enterprisedtomcathttpd-130405053211-phpapp02/85/Enterprise-d-Tomcat-httpd-14-320.jpg)
Enterprise(d) Tomcat & httpd
- 1. 3th April 2013 Enterprise(d) Tomcat in Action Václav Tunka Software Engineer, JBoss by Red Hat
- 2. What will we cover • Short intro to httpd and tomcat • New features in httpd 2.4 • New features in Tomcat 7 & 8
- 3. httpd • Multi-platform HTTP server with reverse proxy, load balancing, virtual hosting, ... • httpd 1.0 was initially designed for a different situation than we have now • A lot of clustered servers for backend (tomcat, AS, jetty), now we need clustering for httpd as well
- 5. httpd 2.4 • Improvements in performance • Making httpd “cloud ready” • Async I/O – Multi-Processing Module workers (MPM) as default. • High-performance APR
- 6. Apache Portable Runtime • Platform independent API for: – Memory allocation and memory pool functionality – Atomic operations – Dynamic library handling – File I/O – Locking – Thread, process and mutex functionality
- 7. Modules • Bandwith control: mod_ratelimit • Security: mod_reqtimeout • I/O buffer control: mod_buffer • LUA support: mod_lua • Making the proxy cloud friendly: – mod_slotmem_shm (from mod_cluster)
- 8. Reverse proxy • Support for dynamic configuration. • Runtime change of clusters w/o restarts. • mod_proxy_express for cloud services. • Connection pooling
- 9. Cloud ready • Solving horizontal scalability. • Low latency. • Fast request-response turover.
- 10. Time for Tomcat
- 11. Tomcat 7 • Servlet 3.0 compliant – asynchronous execution of processing – pluggability and extension support – new set of annotations • JSP 2.2 – Jasper part of Tomcat project
- 12. Tomcat 7 • Valves replaced by Filters (Valves still work) • Startup time reduced • Easy to configure programatically
- 13. Tomcat 8 • Servlet 3.1 – Non-blocking I/O – HTTP protocol upgrade mechanism – Security improvements • JSP 2.3 • SPDY • Web sockets
- 14. References • [1] httpd usage according to W3Tech • Apache and Tomcat logos from apache.org • Mladen Turk's httpd and Tomcat presentations
- 15. Questions? 15
- 16. 16