[TBD]libevent2: A portable and efficient event library

Introduction

Laymen introduction

One of the biggest problems facing many server deployments, particularly web server deployments, is the ability to handle a large number of connections. Whether you are building cloud-based services to handle network traffic, distributing your application over IBM Amazon EC instances, or providing a high-performance component for your web site, you need to be able to handle a large number of simultaneous connections.

So, If you have done server programming, you may be in need of faster mechanism so that server can handle as many request as possible and response time should be good. It means that if many clients are talking to server, then server should be able to respond to each of them. Moreover, you also want that server can be run in various operating system like Linux, FreeBSD, Windows. Libevent is one such library who can fulfill these requirements.

Technical explanation

Building a modern server application requires a method of accepting hundreds, thousands, and even tens of thousands of events simultaneously, whether they are internal requests or network connections effectively handling their operation. There are many solutions available, but the libevent library and libev libraries have both revolutionized the performance and event handling capability.

Alternative solution

LibEv

The libev system is, like libevent, an event loop based system that builds on top of the native implementations of poll(), select(), and so on to provide an event based loop. The libev API is more raw, and there is no HTTP wrapper, http://libev.schmorp.de/bench.html comparison concludes libev as high performance event lib compared to libevent.

Reference

http://stackoverflow.com/questions/1824418/a-clean-lightweight-alternative-to-pythons-twisted

http://www.ibm.com/developerworks/aix/library/au-libev/

http://libev.schmorp.de/bench.html

http://stackoverflow.com/questions/9433864/whats-the-difference-between-libev-and-libevent

https://daniel.haxx.se/blog/2008/05/19/libev-vs-libevent/

https://groups.google.com/forum/#!topic/gevent/0wIfRI_TQZo

https://en.wikipedia.org/wiki/Libevent

http://software.schmorp.de/pkg/libev.html