Dynamically adding caches in SSMCacheManager

[Sweta Nahata]

Hi,

1. Is there a way to dynamically add new caches in SSMCacheManager or it has to be set only when defining the SSMCacheManager bean in the caches property?

I am trying to add as a new cache dynamically in code as below

SSMCache ssmCache = new SSMCache(new PrefixedCacheImpl(cache,
      getName(), NAME_PREFIX_SEPERATOR), timeToLive.intValue(),
      true, false, true);
getCacheManager().getCaches().add(ssmCache);

However, by this way sSMCacheManager.getCacheNames() or sSMCacheManager.getCache(name) does not return the newly added cache?

2. Is there a way to dynamically modify the expiration of SSMCache?

Thanks,

Sweta

[Jakub Białek]

Hi,

To make it work you have to invoke protected method: CacheManager.addCache. CacheManager has two additional fields that keep it state: cacheName and cacheMap. Those fields have to be sync with result of CacheManager.getCaches().

It depends what dynamic means for you. The ExtendedSSMCacheManager allows to set expiration time on each method separately as a part definition in annotation.

Best regards,

Ragnor  

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[Sweta Nahata]

Hi Ragnor,

Yes, saw this method but since this method CacheManager.addCache is protected we will not be able to access it using instance in a class which is in some other package than this one. Can we make it public? 

For now, I have solved it by extending the SSMCacheManager and exposing a public method for the same.

Regarding being able to modify the expiration of SSMCache dynamically, I wanted the capability to be able to modify the expiration in code and I found it by doing 

new SSMCache(cache, timeoutSeconds);

Thanks,

Sweta

On Monday, June 11, 2018 at 1:37:35 AM UTC+5:30, ragnor84 wrote:

Hi,

To make it work you have to invoke protected method: CacheManager.addCache. CacheManager has two additional fields that keep it state: cacheName and cacheMap. Those fields have to be sync with result of CacheManager.getCaches().

It depends what dynamic means for you. The ExtendedSSMCacheManager allows to set expiration time on each method separately as a part definition in annotation.

Best regards,

Ragnor  

On 8 June 2018 at 13:23, Sweta Nahata <naha...@gmail.com> wrote:

Hi,

1. Is there a way to dynamically add new caches in SSMCacheManager or it has to be set only when defining the SSMCacheManager bean in the caches property?

I am trying to add as a new cache dynamically in code as below

SSMCache ssmCache = new SSMCache(new PrefixedCacheImpl(cache,
      getName(), NAME_PREFIX_SEPERATOR), timeToLive.intValue(),
      true, false, true);
getCacheManager().getCaches().add(ssmCache);

However, by this way sSMCacheManager.getCacheNames() or sSMCacheManager.getCache(name) does not return the newly added cache?

2. Is there a way to dynamically modify the expiration of SSMCache?

Thanks,

Sweta

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[Jakub Białek]

Hi,

Could you please create a feature request (issue) on github to make addCache public?

Best regards,

Ragnor

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[Sweta Nahata]

Thanks. I have created one https://github.com/ragnor/simple-spring-memcached/issues/78 

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