Cache Listener for Memcache

[Sweta Nahata]

Hi,

EhCache has the capability of registering a cache listener for events such as put, get, evict, expired, update etc where as I don't see this capability with simple-spring-memcached. Can you let me know if there is a way to achieve this?

Thanks,

Sweta

[Jakub Białek]

Hi,

There isn't such functionality in SSM. Also I see that it isn't supported by xmemcached or spymemcached.

Could you describe in details what you want to achieve? What do you need such capability?

Best regards,

Ragnor

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[Sweta Nahata]

Hi Ragnor,

So basically once the element is expired from the cache we would like to perform some operation which if not done will lead to memory issues. Is there any way we can achieve this? EhCache has the method CacheEventListener.notifyElementExpired and i'm looking for something like this.

Thanks,

Sweta

On Wednesday, June 13, 2018 at 2:08:03 PM UTC+5:30, ragnor84 wrote:

Hi,

There isn't such functionality in SSM. Also I see that it isn't supported by xmemcached or spymemcached.

Could you describe in details what you want to achieve? What do you need such capability?

Best regards,

Ragnor

On 13 June 2018 at 06:45, Sweta Nahata <naha...@gmail.com> wrote:

Hi,

EhCache has the capability of registering a cache listener for events such as put, get, evict, expired, update etc where as I don't see this capability with simple-spring-memcached. Can you let me know if there is a way to achieve this?

Thanks,

Sweta

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[Jakub Białek]

Sweta,

Memcached doesn't support any kind of notification. So it's impossible to be notified that particular key has expired. It also impossible to add such feature to SSM.

Please take a look at this thread: https://groups.google.com/forum/#!topic/memcached/gAUr6-RPQfg

What memory related issues are you afraid?

Best regards,

Ragnor

On 13 June 2018 at 17:39, Sweta Nahata <naha...@gmail.com> wrote:

Hi Ragnor,

So basically once the element is expired from the cache we would like to perform some operation which if not done will lead to memory issues. Is there any way we can achieve this? EhCache has the method CacheEventListener.notifyElementExpired and i'm looking for something like this.

Thanks,

Sweta

On Wednesday, June 13, 2018 at 2:08:03 PM UTC+5:30, ragnor84 wrote:

Hi,

There isn't such functionality in SSM. Also I see that it isn't supported by xmemcached or spymemcached.

Could you describe in details what you want to achieve? What do you need such capability?

Best regards,

Ragnor

On 13 June 2018 at 06:45, Sweta Nahata <naha...@gmail.com> wrote:

Hi,

EhCache has the capability of registering a cache listener for events such as put, get, evict, expired, update etc where as I don't see this capability with simple-spring-memcached. Can you let me know if there is a way to achieve this?

Thanks,

Sweta

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[Sweta Nahata]

Hi Ragnor,

One of the use cases where we were using was to remove expired compiled Groovy scripts from cache by using the method InvokerHelper.removeClass(compiledScript.getClass()); from groovy library. We are storing compiledScript in cache and after the element is deleted from memcache we would also want to clear the metaspace in memory by using the above method.

But I understand your point and will think of some other alternative.

Thanks,

Sweta

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