Would you please ask these questions? It's not ideal to try a few of them.

Would you please ask these questions? It's not ideal to try a few of them.
1. What are the ways to improve the speed of your Web site?
What are the differences between 2.memcache and eaccelerator?
3.mysql text file memcache which one reads the fastest? which is the slowest?
4. A few daily journal files if you want to do an analysis and extract the content that is useful to us, please ask what is the most effective, the journal is as follows:
172.246.113.194--[20/mar/2014:03:19:31 +0800] "GET http://www.bing.com/search/?q=unbuilding%20%22 http/1.0" 302-" http://www.bing.com/"" mozilla/5.0 (Windows NT 6.1; WOW64) applewebkit/537.31 (khtml, like Gecko) chrome/26.0.1410.43 safari/537.31 "
172.246.113.194--[20/mar/2014:03:19:32 +0800] "GET http://www.***.net/http/1.0" 11629 "http://www.***.net/" Mozi lla/5.0 (Windows NT 5.1; rv:23.0) gecko/20100101 firefox/23.0 "
113.97.185.207--[20/mar/2014:03:19:56 +0800] "Get/favicon.ico http/1.1" 1150 "-" "mozilla/5.0 (Windows NT 5.1) App lewebkit/537.17 (khtml, like Gecko) chrome/24.0.1312.57 safari/537.17 SE 2.X METASR 1.0 "

5. There are a few lines of wrong code on the lower side, please simply explain each line of mistakes and make a solution.
Warning:mysql_num_rows () expects parameter 1 to be resource, boolean given In/home/u378761662/public_html/login/checklo gin.php on line 27
[Notice] Parent:child process exited with status 1--restarting.
[ERROR] [Client 127.2.3.4] File does not exist:c:/vhosts/www.***.com/undefined, referer:http://www.***.com/
Syntax Error on line 129

------Solution--------------------
It's natural that the underlying programmer doesn't need to know that much.
Knowledge enough to be able to, less do not know very much the preconceived, after the development of a lot faster

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