namespace expiration invalidate all keys

[darius1907]

Hi,
I like your library and i would like to use it in my spring boot project.
But i have noticed a wrong behaviour about namespace key.
I have set a cache with 120s ttl.

When i put the key A in cache, keys namespaceValue:A and namespace are created with expiration 120s,
after 60 sec i put the key B in the same cache and keys namespaceValue:B is created with expiration 120s.
after 60 sec namespaceValue:A and namespace keys are expired, key B has still 60s of ttl but namespace is expired so i have i cache miss.

I have solved this issue by adding set namespace key in put method of MemcachedCache class to extend ttl

    @Override
    public void put(Object key, Object value) {
        // added to extend namespace key ttl
        this.memcachedClient.set(this.memcacheCacheMetadata.namespaceKey(), this.memcacheCacheMetadata.expiration(),namespaceValue());
        this.memcachedClient.set(memcachedKey(key), this.memcacheCacheMetadata.expiration(), toStoreValue(value));
    }

I hope that you'll fix this issue (maybe with a more elegant solution than i do :-))

[Igor Bolic]

@darius1907 thank you for reporting the issue. We'll make it a top most priority of fixing the namespace expiration.

[Igor Bolic]

Fixed with the latest release: 1.3.1