Memcached is a high performance multithreaded event-based key/value cache store intended to be used in a distributed system.
See: https://memcached.org/about
A fun story explaining usage: https://memcached.org/tutorial
If you're having trouble, try the wiki: https://memcached.org/wiki
If you're trying to troubleshoot odd behavior or timeouts, see: https://memcached.org/timeouts
https://memcached.org/ is a good resource in general. Please use the mailing list to ask questions, github issues aren't seen by everyone!
- libevent - https://www.monkey.org/~provos/libevent/ (libevent-dev)
- libseccomp (optional, experimental, linux) - enables process restrictions for better security. Tested only on x86-64 architectures.
- openssl (optional) - enables TLS support. need relatively up to date version. pkg-config is needed to find openssl dependencies (such as -lz).
If you downloaded this from the tarball, compilation is the standard process:
./configure
make
make test # optional
make install
If you want TLS support, install OpenSSL's development packages and change the configure line:
./configure --enable-tls
If you want to enable the memcached proxy:
./configure --enable-proxy
To build memcached in your machine from local repo you will have to install autotools, automake and libevent. In a debian based system that will look like this
sudo apt-get install autotools-dev automake libevent-dev
After that you can build memcached binary using automake
cd memcached
./autogen.sh
./configure
make
make test
It should create the binary in the same folder, which you can run
./memcached
You can telnet into that memcached to ensure it is up and running
telnet 127.0.0.1 11211
stats
IF BUILDING PROXY, AN EXTRA STEP IS NECESSARY:
The proxy has some additional vendor dependency code that we keep out of the tree.
cd memcached
cd vendor
./fetch.sh
cd ..
./autogen.sh
./configure --enable-proxy
make
make test
Be warned that the -k (mlockall) option to memcached might be dangerous when using a large cache. Just make sure the memcached machines don't swap. memcached does non-blocking network I/O, but not disk. (it should never go to disk, or you've lost the whole point of it)
See https://build.memcached.org/ for multi-platform regression testing status.
Feel free to use the issue tracker on github.
If you are reporting a security bug please contact a maintainer privately. We follow responsible disclosure: we handle reports privately, prepare a patch, allow notifications to vendor lists. Then we push a fix release and your bug can be posted publicly with credit in our release notes and commit history.
