memcached - Memcache in high performance sites with PHP -

-

I am trying to customize a webservice that needs to be somewhat faster (less than 1 second) And necessary to maintain a high load of requests (more than 1000 / second) we are using memcached as a way of storing objects in "memory". It seems that we are getting large number of output errors from memcash. [Thu 23 Jul 22:59:42 2009] [Error] [Client 123.456.789.10] PHP Warning: Memcache :: Connect () [Memcache.connect]: 127.0.0.1121211 Not connected Maybe, the connection timed out (110)

Then, for questions

  1. The memory would be used to store objects in memory Is that the time to make that? Will APC be a better place for these things? Read number and

  2. Are there common problems that I'm ignoring in establishing memcache to work more efficiently?

Thanks for any help, I'm new to working with memcache, and I think I'm missing something.

To answer your first point:

  • memcached The power is that it allows the creation of a cluster of cache servers: This can not be used on a single server (the way you can use it)
    • The principle is that you have many servers, and each
    • You do not have access to some free RAM to use this RAM, you install a memcatch on these servers, and this Configure to use the quantity of RAM to be used
    • And if a machine is down, it automatically closes it, and Load load balances on others
    • The lack of memcached (for some people) it is network-based (even when you use it on only one machine); Which means "local-only"
  • The APC only works on one machine: it's great to store only the data you need (caching mechanism of caching Is used in a server), or if you have only one server; There is no more data about what you can store in the RAM
    • The main drawback is that it does not scale completely: it is a machine thought; If you have 10, then you have to keep the same data once every 10 times on each machine.
    • To get the data, the APC is said to be 5 times faster, because it is local, and one thing about non-network APC: if you use it opcode cache capability (you want) For sure, make sure you configure it for enough. RAM for Opcode + cache (so that it does not get out of memory for opcode cache, which will be bad)

      If you need more help with a memcache and do not get much help here Is a mailing list, which is sometimes quite active; The effort to do this may be useful.


Comments

Post a Comment

Popular posts from this blog

c# - ListView onScroll event -

-
I am programming a simple C # application, and I need a Scallow event on the list view. So I inherited the original ListView class created in ListviewEx witch. I found out how to locate the scroll message from WinAPI and I modified the WndProc method. Now I have this WndProc: protected override zero WndProc (Ref message message) {base.WndProc (Ref I); If (m.msg == WM_VSCROLL) {onScroll (This, New EventArgs ()); }} But the problem is, I do not know how to know about scrolling information. This data should be in wParam, but there is a LOWORD macro ++ like in C in C # and I switch to find the criteria like SB_ below, SB_ENDSCROLL, SB_PAGEUP etc. there any way Need to change the LOWORD macro from C #? Or any other way to find the necessary parameters about scrolling? You can define the WParam constants as the following: Private const int WM_HSCROLL = 0x114; Private Constant WM_VSCROLL = 0x115; Private contact int SBHOZZ = 0; Private Consultant SB_VERT = 1; Private Con...
Read more

PHP - get image from byte array -

-
I am trying to create a back-end for my mobile application. I am sending the content of an image in the body of the HTTP request (output stream) as a byte array, I want to read this stream of bytes in PHP scripts and take back an image. Can anyone tell me how can I do this? Thank you. You can obtain the request body $ body = Reading from file_get_contents ('php: // input'); What you do with that data Depending on you, you can write the data in a file as you mentioned that this is image data, you can drop the data into the object can do. Another option is to use and load the image.
Read more

Linux Terminal Problem with Non-Canonical Terminal I/O app -

-
I have a small app written in C to run on Linux. Part of the app accepts user-input from keyboard , And it uses non-canonical terminal mode so that it can respond to each keystroke. The section of the code that accepts input is a simple task that is called repeatedly in the loop: char get_input () {char C = 0; Int res = reading (input_tamille, & amp; c, 1); If (RSS == 0) 0 returns; If (res == -1) {/ * snip error handling * /} return c; } It reads a letter from the terminal if there is no input within a given time limit, (c_cc [VTIME] value in the vocabulary structure), read () 0 And get_input () is called again It all works very well, I have recently discovered that if you run this app in a terminal window, and then the app Close the terminal window without ending, the app will not exit Received, but CPU intensive launches into an infinite loop, where the read () returns 0 without waiting continued. So how can I get out of the apple if it runs from the terminal win...
Read more