[转]Installing Memcached on Windows

卸载的时候判断程序是否正在运行,1.卸载程序的时候如何判断程序是否正在运行,原文链接

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Warning

 

Installing Memcached on Windows

原稿链接

 

Submitted by COMMASTER21JAN ’15

Memcached is a high performance, in-memory key-value store or caching
system. Its main purpose is to speed up web applications by caching
database queries, contents, or other computed results.

Memcached is originally a linux application, but since it is
open-source, it has been compiled for windows. There are two major
sources for the pre-built windows binary: Jellycan and Northscale, and
both versions can be used. The following are the download links for the
memcached windows binaries:

In versions earlier than 1.4.5, memcached can install itself as a
service. However, the ability to run memcached as a service is removed
since version 1.4.5. Therefore, the installation steps are divided into
two categories, part A for memcached prior to version 1.4.5. and part B
for memcached version 1.4.5 and later.

Please do this operation CAREFULLY, otherwise you may get something
wrong with your system.

卸载的还要删除日志,卸载的时等候法庭判剖断程序是不是正在运作,regsvr3二

A) Installation of memcached < 1.4.5:

  1. Extract the memcached windows binary to any directory.
  2. In versions earlier than 1.4.5, memcached can install itself as a
    service. Run a command prompt with elevated
    privileges,
    and type:

    c:\memcached\memcached.exe -d install
    

    * Replace c:\memcached\memcached.exe金沙澳门官网7817网址, with the actual path of
    your installation.

  3. Then, start or stop the memcached service with the following
    command:

    c:\memcached\memcached.exe -d start
    c:\memcached\memcached.exe -d stop
    
  4. To change the configuration of memcached, run regedit.exe and
    navigate to the key
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\memcached“.
    Suppose you wish to increase the memory limit of memcached, edit the
    value of ImagePath to the following:

    "c:\memcached\memcached.exe" -d runservice -m 512
    

    * Besides ‘-m 512‘, you may also append other memcached
    parameters to the path. Run “c:\memcached\memcached.exe -h” to
    view the list of available parameters.

  5. Meanwhile, to uninstall the memcached serivce, run the following
    command:

    c:\memcached\memcached.exe -d uninstall
    

 

 

B) Installation of memcached >= 1.4.5:

  1. Extract the memcached windows binary to any directory.
  2. In version 1.4.5 or later, memcached cannot run as a service. It
    must be started as a normal process using the task scheduler. To
    configure the memcached process to run automatically every time
    windows start, run a command prompt with elevated
    privileges,
    and type the following:

    schtasks /create /sc onstart /tn memcached /tr "'c:\memcached\memcached.exe' -m 512"
    

    * Replace c:\memcached\memcached.exe with the actual path of
    your installation.
    ** Besides ‘-m 512‘, you may also append other memcached
    parameters to the path. Run “c:\memcached\memcached.exe -h” to
    view the list of available parameters.

  3. Meanwhile, to remove the scheduled memcached task, run the following
    command:

    schtasks /delete /tn memcached
    

 

When we install application into win10, some of them will register their
services into windows service list to keep some part of the application
available as a daemon. But later when we uninstall the applications,
these application-related service entries may be left behind due to a
failure of uninstallation. Don’t worry, we can easily remove those
unnecessary service entries with win10 cmd.

一.卸载程序的时候什么剖断程序是还是不是正在运作

Integrating with PHP

To interface with memcached in PHP, you need to install the memcache
extension for PHP:

  1. Check that your PHP extension folder has the file php_memcache.dll.
    If not, download the file
    from  (select the windows dll
    file), and place it in the PHP extension folder.
  2. Add the following line in php.ini to enable the memcache
    extension.
    extension=php_memcache.dll
  3. Create this simple php script file to test that it works.

    <?php
    
    $memcache = new Memcache;
    $memcache->connect('localhost', 11211) or die ("Could not connect");
    
    $version = $memcache->getVersion();
    echo "Server's version: ".$version."<br/>\n";
    
    $tmp_object = new stdClass;
    $tmp_object->str_attr = 'test';
    $tmp_object->int_attr = 123;
    
    $memcache->set('key', $tmp_object, false, 10) or die ("Failed to save data at the server");
    echo "Store data in the cache (data will expire in 10 seconds)<br/>\n";
    
    $get_result = $memcache->get('key');
    echo "Data from the cache:<br/>\n";
    
    var_dump($get_result);
    
    ?> 
    

Please see the following screenshot:

Integrating with Python

To interface with memcached in Python, you need to install the memcached
client for Python.

  1. Execute one of the following command to install the memcached
    client. The first is for Python 2.x while the second is for Python
    3.x.

    pip install python-memcached
    pip install python3-memcached
    
  2. Create this simple python script to test that it works.

    import memcache
    mc = memcache.Client(['127.0.0.1:11211'], debug=0)
    mc.set("some_key", "Some value")
    value = mc.get("some_key")
    mc.set("another_key", 3)
    mc.delete("another_key")
    mc.set("key", "1")   # note that the key used for incr/decr must be a string.
    mc.incr("key")
    mc.decr("key")
    

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Memcached statistics

To view the statistics for memcached, bring up a telnet connection to
memcached by the command:

telnet 127.0.0.1 11211

Then, type stats and enter.

Here is an explanation of the different memcached stats.

Name Type Meaning
pid 32u Process id of this server process
uptime 32u Number of secs since the server started
time 32u current UNIX time according to the server
version string Version string of this server
pointer_size 32 Default size of pointers on the host OS (generally 32 or 64)
rusage_user 32u.32u Accumulated user time for this process (seconds:microseconds)
rusage_system 32u.32u Accumulated system time for this process (seconds:microseconds)
curr_items 32u Current number of items stored
total_items 32u Total number of items stored since the server started
bytes 64u Current number of bytes used to store items
curr_connections 32u Number of open connections
total_connections 32u Total number of connections opened since the server started running
connection_structures 32u Number of connection structures allocated by the server
reserved_fds 32u Number of misc fds used internally
cmd_get 64u Cumulative number of retrieval reqs
cmd_set 64u Cumulative number of storage reqs
cmd_flush 64u Cumulative number of flush reqs
cmd_touch 64u Cumulative number of touch reqs
get_hits 64u Number of keys that have been requested and found present
get_misses 64u Number of items that have been requested and not found
delete_misses 64u Number of deletions reqs for missing keys
delete_hits 64u Number of deletion reqs resulting in an item being removed.
incr_misses 64u Number of incr reqs against missing keys.
incr_hits 64u Number of successful incr reqs.
decr_misses 64u Number of decr reqs against missing keys.
decr_hits 64u Number of successful decr reqs.
cas_misses 64u Number of CAS reqs against missing keys.
cas_hits 64u Number of successful CAS reqs.
cas_badval 64u Number of CAS reqs for which a key was found, but the CAS value did not match.
touch_hits 64u Numer of keys that have been touched with a new expiration time
touch_misses 64u Numer of items that have been touched and not found
auth_cmds 64u Number of authentication commands handled, success or failure.
auth_errors 64u Number of failed authentications.
evictions 64u Number of valid items removed from cache to free memory for new items
reclaimed 64u Number of times an entry was stored using memory from an expired entry
bytes_read 64u Total number of bytes read by this server from network
bytes_written 64u Total number of bytes sent by this server to network
limit_maxbytes 32u Number of bytes this server is allowed to use for storage.
threads 32u Number of worker threads requested. (see doc/threads.txt)
conn_yields 64u Number of times any connection yielded to another due to hitting the -R limit.
hash_power_level 32u Current size multiplier for hash table
hash_bytes 64u Bytes currently used by hash tables
hash_is_expanding bool Indicates if the hash table is being grown to a new size
expired_unfetched 64u Items pulled from LRU that were never touched by get/incr/append/etc before expiring
evicted_unfetched 64u Items evicted from LRU that were never touched by get/incr/append/etc.
slab_reassign_running bool If a slab page is being moved
slabs_moved 64u Total slab pages moved
crawler_reclaimed 64u Total items freed by LRU Crawler
lrutail_reflocked 64u Times LRU tail was found with active ref. Items moved to head to avoid OOM errors.
Name Type Meaning

Source: 

 

另,stackoverflow:

North Scale labs have released a build of memcached 1.4.4 for Windows
x64:

UPDATE: they have recently released Memcached Server – still FREE but
enhanced distro with clustering, web-based admin/stats UI etc. (I’m not
related to them in any way) Check it out
at  and download
at: 

UPDATE 2: NorthScale Memcached is no longer available as a standalone
download. Now they have made it part of their commercial No-SQL DB
offering called Membase. It can be configured to run in Memcached-only
mode (i.e. without persistence) and there’s a 100% free version too.
Check it out here: 

UPDATE 3: MemBase has slept with CouchDB and produced a hybrid product
offering, called CouchBase. They still do offer a free “Community”
version at 

I will show you how to remove the service “wwbizsrv” from the list as an
example.

 二.强制删除安装目录