Akash created HTTPCLIENT-2406:
---------------------------------

             Summary: MemcachedHttpCacheStorage always stores data in remote 
store with zero expiration.
                 Key: HTTPCLIENT-2406
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2406
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: HttpCache, HttpClient (classic)
            Reporter: Akash


MemcachedHttpCacheStorage today calls remote cache store with "0" TTL 
indicating the remote cache to never clean up the cached data. Hence the remote 
cache memory is filling up over a period of time without any sort of clean up 
since the TTL is 0.
{code:java}
@Override
protected void store(final String storageKey, final byte[] storageObject) 
throws ResourceIOException {
    try {
        client.set(storageKey, 0, storageObject);
    } catch (final CancellationException ex) {
        throw new MemcachedOperationCancellationException(ex);
    }
} {code}

>From what I can tell, this is implemented this way for a long time now, is 
>this intentional ? if not, do you consider it as a bug?

Shouldn't the TTL sent as part of the response be used during this call?

https://github.com/apache/httpcomponents-client/blob/master/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/memcached/MemcachedHttpCacheStorage.java#L174



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