shenfeng / dictionary

Pure c with epoll: A English-English dictionary to assist reading

A simple online english dictionary

A simple and ease to use English dictionary written in C using epoll in server side and javascript in client side. Data is extracted from LDOCE

Directory structure:

1. /server Server side code, in C.
2. /client Javascript/HTML/CSS
3. /test/java Util test and performance test code
4. /src Clojure and java code to generate the dbdata file

dbdata file format

• first 2 byte: how many words in this file. big-endian
• the rest are word items, one by one
• word items are sorted asc
• word item format, five parts, in order
  1. word
  2. \0
  3. 1 bit: 0 is gzipped data, 1 is unzipped
  4. 15 bit: how many bytes of data of this word
  5. data of this word

Linux epoll's performance is amazing

while 800k idle connection is kept, still 53.4k req/s. more info