php developers face questions --- daily face questions 1
A summary
Sentence summary:
To determine the actual direction of learning, then go online to find video resources, very much, then reading
1, what data exist memcache inside?
Data that data to go inside the database query, database query results
Why use Memcache?
Mainly used for dynamic Web applications in order to reduce the load on the database.
It is to reduce the number of database read by caching data and objects in memory,
thereby increasing the speed of the site visit.
2, the Japanese PV PV What does it mean?
PV (Page View) views: ie page views or clicks, a measure of the number of web sites they visit; open or refresh every user within a certain period of statistical records on a page once, several times or open the browser to refresh the same page the cumulative amount.
3, the page file upload with what request?
http request: can simulate http request as long as the file upload can be achieved, such as telnet
4, cookie disabled, session can use it?
Can: but not sent through the browser, which can be written in the form
Second, content in summary
Reproduced in: https: //www.cnblogs.com/Renyi-Fan/p/11043905.html