Question: Where is memcached-tool?

Answer

memcached-tool is a command-line utility that comes with the Memcached package. It provides various statistics and information about a running Memcached instance, such as the number of active connections, cache hit rates, and memory usage.

To use memcached-tool, you need to have Memcached installed on your system first. The location of memcached-tool may vary depending on your operating system and how you installed Memcached.

On Linux systems, memcached-tool is usually installed along with the Memcached service. You can check if memcached-tool is available by running the following command:

```
which memcached-tool
```

If memcached-tool is installed, this command will output the path to the executable. For example:

```
/usr/bin/memcached-tool
```

If memcached-tool is not installed, you can usually install it using your distribution's package manager. For example, on Ubuntu or Debian-based systems, you can install memcached-tool by running:

```
sudo apt-get update
sudo apt-get install libmemcached-tools
```

Once installed, you can use memcached-tool to monitor and manage your Memcached instance. Here are some examples of commands you can run:

• To get general statistics about the running Memcached instance:
  ```
  memcached-tool <memcached-host>:<memcached-port> stats
  ```
• To get detailed statistics for a specific Memcached key:
  ```
  memcached-tool <memcached-host>:<memcached-port> dump <key>
  ```
• To view the contents of the entire Memcached cache:
  ```
  memcached-tool <memcached-host>:<memcached-port> dump
  ```