Flushing all data from a Memcached instance is often required during testing or when you want to clear the cache completely. This might be necessary in scenarios such as changing application behavior, reconfiguring data storage settings, or cleaning up after specific processes.
We use the
flush method provided by the 'memjs' node package to flush all the data in a Memcached instance. First, make sure to install it via
npm install memjs.
This example connects to a Memcached server and calls the
flush function. If there's an error, it will log that error; otherwise, it will log a successful flush message.
Ensure your Memcached server is running and accessible, otherwise, this will throw a connection error.
flushsparingly, as it wipes out all data in Memcached. It's not recommended for routine use but can be very useful in development or testing environments.
flushmethod to avoid unhandled exceptions in your Node.js application.
flush. If there's an issue with the network or the Memcached server, it will return an error which should be properly handled.
flushin a production environment without understanding its implications. It completely wipes out all cached data, which could potentially impact the performance of your application if used inappropriately.
What does 'flush' do in Memcached? The 'flush' command in Memcached invalidates all existing cache items immediately, freeing up all the memory that was used by these items.
Can I recover data after flushing Memcached? No, once data is flushed from Memcached it cannot be recovered. It's a destructive operation.
Does 'flush' stop the Memcached server? No, the 'flush' operation only clears the cache and does not stop or restart the Memcached server.