[jboss-as7-dev] A simple timed cache?

[Darran Lofthouse]

One of the processes that I need this to operate in is the host 
controller process which is one of the slimmest processes so really as 
Jason says not looking to bring in overhead when all I need is an 
enhanced Map.

Regards,
Darran Lofthouse.


On 09/06/2011 04:17 PM, Jason T. Greene wrote:
> On 9/6/11 9:58 AM, Sanne Grinovero wrote:
>> On 6 September 2011 16:28, Anil Saldhana<Anil.Saldhana at redhat.com>   wrote:
>>> On 09/06/2011 08:38 AM, Jason T. Greene wrote:
>>>>>>>>    2) copy infinispan's LIRS map
>>>>>>
>>>>>>    Infinispan's LIRS is not easy to extract out, you'll have to make
>>>>>>    significant changes
>>>> Last I looked it was a small handful of classes. Not a big deal. I think
>>>> Jesper used it in ironjacamar. The security subsytem directly linked
>>>> against it. That' something I have been meaning to open a JIRA on, since
>>>> this is technically not a public API it's likely better to copy.
>>>>
>>> For the Auth Cache in the Security subsystem, we have 2 use cases:
>>> a) Timed Cache.
>>> b) Timed Cache with cluster distribution.
>>>
>>> The former is default usage while the latter is something the user
>>> configures.
>>>
>>> For the cluster aware cache, we brought in direct dependence on
>>> Infinispan cache.
>>>
>>> Jason, we support your insistence on  a smaller infinispan dependence.
>>
>> +1 from another Infinispan consumer&&   developer.
>>
>> If you could explain why you don't want to depend on it I'll call
>> attention on this at the Infinispan meeting, to be held in two weeks,
>> and see if we can do something in useful time.
>> If the main reason is bootup time in standalone mode, right now the
>> testsuite performs a dozen tests per second, to give a rough idea of
>> where we stand now, but we can work on it more if that's the main
>> factor.
>> I don't think we ever spent any effort to optimize the boot time, so
>> there might be some low hanging fruits.
>
> When we were working on 7, code which used infinispan (even without the
> slow jaxb XML parsing) had to eat close to 500 ms initialization time. I
> didn't look too deeply into it, but infinispan does reflective analysis
> and injection which isnt free.
>
> Basically at the end of the day, when all we need is a map, there is no
> reason to expect any initialization time that is not comparable to any
> other map implemementation (CHM etc).
>

-- 
Darran Lofthouse - Principal Software Engineer

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