Clearing a distributed cache typically involves deleting its entries, either one at a time or all at once. The method to do so however depends on the specific caching system you are using. Here are examples for three popular systems:
To delete all keys from all databases in Redis, you use the
If you want to delete all keys from the currently selected database (default is database 0), you use the
For memcached, you can invalidate all existing cache items using the
flush_all command. Below is an example of how to flush everything from a server running on
localhost on port
This command does not remove items immediately, but rather invalidates them - they will be removed as and when Memcached needs to reclaim memory.
With Apache Ignite, you can clear caches with the
removeAll() method, which removes all entries from cache.
Remember that clearing cache should be done carefully, considering its impact on your application's performance and functionality.