[OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

[hidden email] wrote on 17.10.2005
11:42:35:

> Hi again on this issue,

> 

> I reseached over the available documentation again (last time in 

> march 2005 ) but didnt find any news. So this is another attemp to

> get a better understanding.

> 

> Existing Info I found:

> Wiki: http://ofbizwiki1.go-integral.com/Wiki.jsp?page=CacheSettings

> ProductionSetupguide: http://www.undersunconsulting.

> com/static/OFBizBasicProductionSetup.pdf

> 

> There is not much detail in those documents. They both pretty much

> say: Do it in the cache.properties :-)

> 

> I think all ofbiz admins need more detail on it. Thats why I specify

> the questions more detailed and would appreceate if anybody would

> post a example fine-tuned cache.properties file

> 

> All Feedback and hints will be compiled by me and added to the wiki/faq

> 

> So here are my questions

> 1. Question: What is the Flag "useSoftreference" for? What
does true

> and false do?

> 2. Question: What unit is "maxSize" and what if it is left
empty in 

> the cache.propery?

> 

> 

> 3.Question: What exactly do the per-delegator Entity Engine cache
settings

> tune?

> #Examples for per-delegator Entity Engine cache settings

> #entitycache.entity-list.default.ProductPriceRule.expireTime=0

> #entitycache.entity-list.default.ProductPriceRule.useSoftReference=true

> 

> 4. On the Cache Maintenance Page I finde entriey like "entitycache.

> entity.default.XXXX" and "entitycache.entity-list.default.XXXXX".

> What is the difference betwen those? 

> And why is there no entry in the cache.properties for entitycache.

> entity.default.XXXX entries?

> Where do I create those entitycache.entity.default.XXXX entries

> 5. Questions regarding the Cache Maintenance Page

> I cleared the cache and afterwards I montitored the caches (I hope

> the formating with tabs is visibel too you)

> 

> Cache Name size hitCount missCount maxSize expireTime useSoftRef?

> a) entitycache.entity-list.default.ProductCategoryMember 9,822 7,992

> 54,072 20,000 86,400,000 true 

> b) entitycache.entity-list.default.ProductPriceAction 52 2,180 2,736

> 3,000 86,400,000 true

> c) entitycache.entity-list.default.ProductPriceCond 109 56,733 59,

> 239 70,000 86,400,000 true 

> 

> On a) With cache the missCount was allmost emmidiatly at 54000 the

> hitCount and size slowly crow. My question now is: Why isnt the size

> 20000 after 54000 misses? TheProdukctCategoryMember is ideal for caching.

> On b and c) since cache clearing the cachehit count is growing 

> almost linear with the misscount! Why? Those tables are suppossed
to

> be queried every almost every shop hit and the tables are static!
So

> I would expect the missCount to be growing very slowly and the 

> hitCount to grow very fast. 

> 

> 6. Qustion: What other tuning for the cache.properties tips are there?

> Answer from http://www.undersunconsulting.

> com/static/OFBizBasicProductionSetup.pdf

> ${ofbiz insall dir}/base/config/cache.properties

> Fresh from SVN, this file is configured to be development friendly
to reload

> resources frequently. For production use the expire times for the

> caches in the last

> section of the file should all be commented out by putting a pound

> sign “#” at the

> beginning of each line. The properties in question start with 

> “minilang.”, “script.”,

> “webapp.”, “widget.” And “template.”.

> 

> Bye

> Michael 

> _______________________________________________

> Users mailing list

> [hidden email]

> http://lists.ofbiz.org/mailman/listinfo/users
>> Q1: What is the Flag "useSoftreference"
for?

> A1: The useSoftReference property is used to specify whether soft
references

> should be used for cache entries. Soft references help keep large
caches

> from taking too much memory by allowing the garbage collector to clear
these entries

> when more memory is needed. Possible values: true/false.

Summery: It is recommended to set useSoftreference
= "true" for larger caches. 
[hidden email] wrote on 21.10.2005
13:06:18:

> Hi,

>  

> Better late than never. Answers to some of your questions. I'm too
is

> interested in more info on this subject.

> 

> Q1: What is the Flag "useSoftreference" for?

> A1: The useSoftReference property is used to specify whether soft
references

> should be used for cache entries. Soft references help keep large
caches

> from taking too much memory by allowing the garbage collector to clear
these entries

> when more memory is needed. Possible values: true/false.

> Q2: Question: What unit is "maxSize"...?

> A2: Specifies the maximum number of entries in the cache.

> 

> 

> Regards,

> 

> </Firas>

> 

> ________________________________

> 

> From: [hidden email] [mailto:[hidden email]]

> On Behalf Of [hidden email]

> Sent: den 17 oktober 2005 11:43

> To: OFBiz Users / Usage Discussion

> Subject: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

> 

> 

> 

> Hi again on this issue,

> 

> I reseached over the available documentation again (last time in march
2005

> ) but didnt find any news. So this is another attemp to get a better

> understanding.

> 

> Existing Info I found:

> Wiki: http://ofbizwiki1.go-integral.com/Wiki.jsp?page=CacheSettings

> ProductionSetupguide:

> http://www.undersunconsulting.com/static/OFBizBasicProductionSetup.pdf

> 

> There is not much detail in those documents. They both pretty much
say: Do

> it in the cache.properties :-)

> 

> I think all ofbiz admins need more detail on it. Thats why I specify
the

> questions more detailed and would appreceate if anybody would post
a example

> fine-tuned cache.properties file

> 

> All Feedback and hints will be compiled by me and added to the wiki/faq

> 

> So here are my questions

> 1. Question: What is the Flag "useSoftreference" for? What
does true and

> false do?

> 2. Question: What unit is "maxSize" and what if it is left
empty in the

> cache.propery?

> 

> 

> 3.Question: What exactly do the per-delegator Entity Engine cache
settings

> tune?

> #Examples for per-delegator Entity Engine cache settings

> #entitycache.entity-list.default.ProductPriceRule.expireTime=0

> #entitycache.entity-list.default.ProductPriceRule.useSoftReference=true

> 

> 4. On the Cache Maintenance Page I finde entriey like

> "entitycache.entity.default.XXXX" and

> "entitycache.entity-list.default.XXXXX". What is the difference
betwen

> those? 

> And why is there no entry in the cache.properties for

> entitycache.entity.default.XXXX entries?

> Where do I create those entitycache.entity.default.XXXX entries

> 5. Questions regarding the Cache Maintenance Page

> I cleared the cache and afterwards I montitored the caches (I hope
the

> formating with tabs is visibel too you)

> 

> Cache Name size hitCount missCount maxSize expireTime useSoftRef?

> a) entitycache.entity-list.default.ProductCategoryMember 9,822 7,992
54,072

> 20,000 86,400,000 true 

> b) entitycache.entity-list.default.ProductPriceAction 52 2,180 2,736
3,000

> 86,400,000 true

> c) entitycache.entity-list.default.ProductPriceCond 109 56,733 59,239
70,000

> 86,400,000 true 

> 

> On a) With cache the missCount was allmost emmidiatly at 54000 the
hitCount

> and size slowly crow. My question now is: Why isnt the size 20000
after

> 54000 misses? TheProdukctCategoryMember is ideal for caching.

> On b and c) since cache clearing the cachehit count is growing almost
linear

> with the misscount! Why? Those tables are suppossed to be queried
every

> almost every shop hit and the tables are static! So I would expect
the

> missCount to be growing very slowly and the hitCount to grow very
fast. 

> 

> 6. Qustion: What other tuning for the cache.properties tips are there?

> Answer from

> http://www.undersunconsulting.com/static/OFBizBasicProductionSetup.pdf

> ${ofbiz insall dir}/base/config/cache.properties

> Fresh from SVN, this file is configured to be development friendly
to reload

> resources frequently. For production use the expire times for the
caches in

> the last

> section of the file should all be commented out by putting a pound
sign "#"

> at the

> beginning of each line. The properties in question start with "minilang.",

> "script.",

> "webapp.", "widget." And "template.".

> 

> Bye

> Michael

> 

> 

>  

> _______________________________________________

> Users mailing list

> [hidden email]

> http://lists.ofbiz.org/mailman/listinfo/users

[OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

[OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

Re: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

RE: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties

RE: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties