Ok, I will implement interfaces from simple store. At 01:09 PM 1/15/2002 +0100, you wrote:
>Hi Juozas, >do you have interest to move your implemenation to my simplestore >package? >The only thing you have to do, is to replace your Store interface with >my Store interface. > >I identify two objects we can need: >- your MemoryStore, maybe it needs a new name. >- your SynchronizedStore, that can we use for all our Stores. > >It would be kool to have it! > >What do you think? > >Greets > > Gerhard > > > > > > > Juozas > Baliuka > > <[EMAIL PROTECTED] To: "Jakarta Commons > Developers List" > t> > <[EMAIL PROTECTED]> > cc: > > 15.01.2002 Subject: RE: [simplestore] > inital check in > 13:46 > > Please > respond > > to > "Jakarta > > Commons > > Developers > > List" > > > > > > > > > >Hi, >This is cache implementation, it will not work if key has strong referense >on value (or have bugs). >There is a very simple test in MemoryStore main method. >I send a correct implementation for SoftReferenceMap in commons collections >a month ago, but it was forgot. >It is possible to implement cache with Map interface and memory store can >wrap this map (it will be more useful). Is it interesting for anybody ? > >output from test : > >operations ... >1 removed from queue, size7 >2 removed from queue, size15 >3 removed from queue, size14 >4 removed from queue, size13 >5 removed from queue, size12 >6 removed from queue, size11 >7 removed from queue, size10 >8 removed from queue, size9 >9 removed from queue, size8 >10 removed from queue, size7 >11 removed from queue, size15 >12 removed from queue, size14 >13 removed from queue, size13 >14 removed from queue, size12 >15 removed from queue, size11 >16 removed from queue, size10 >17 removed from queue, size9 >18 removed from queue, size8 >19 removed from queue, size7 >23 removed from queue, size15 >24 removed from queue, size14 >25 removed from queue, size13 >26 removed from queue, size12 >27 removed from queue, size11 >28 removed from queue, size10 >20 removed from queue, size9 >21 removed from queue, size8 >22 removed from queue, size7 >29 removed from queue, size15 >30 removed from queue, size14 >31 removed from 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queue, size11 >157 removed from queue, size10 >158 removed from queue, size9 >159 removed from queue, size8 >160 removed from queue, size7 >164 removed from queue, size15 >165 removed from queue, size14 >166 removed from queue, size13 >167 removed from queue, size12 >168 removed from queue, size11 >169 removed from queue, size10 >170 removed from queue, size9 >171 removed from queue, size8 >172 removed from queue, size7 >173 removed from queue, size15 >174 removed from queue, size14 >175 removed from queue, size13 >176 removed from queue, size12 >177 removed from queue, size11 >178 removed from queue, size10 >179 removed from queue, size9 >180 removed from queue, size8 >181 removed from queue, size7 >184 removed from queue, size15 >185 removed from queue, size14 >186 removed from queue, size13 >187 removed from queue, size12 >188 removed from queue, size11 >189 removed from queue, size10 >190 removed from queue, size9 >182 removed from queue, size8 >183 removed from queue, size7 >191 removed from queue, size15 >192 removed from queue, size14 >193 removed from queue, size13 >194 removed from queue, size12 >195 removed from queue, size11 >196 removed from queue, size10 >197 removed from queue, size9 >198 removed from queue, size8 >199 removed from queue, size7 >207 removed from queue, size15 >208 removed from queue, size14 >200 removed from queue, size13 >201 removed from queue, size12 >202 removed from queue, size11 >203 removed from queue, size10 >204 removed from queue, size9 >205 removed from queue, size8 >206 removed from queue, size7 >209 removed from queue, size15 >210 removed from queue, size14 >211 removed from queue, size13 >212 removed from queue, size12 >213 removed from queue, size11 >214 removed from queue, size10 >215 removed from queue, size9 >216 removed from queue, size8 >217 removed from queue, size7 >218 removed from queue, size15 >219 removed from queue, size14 >220 removed from queue, size13 >221 removed from queue, size12 >222 removed from queue, size11 >223 removed from queue, size10 >224 removed from queue, size9 >225 removed from queue, size8 >226 removed from queue, size7 >230 removed from queue, size15 >231 removed from queue, size14 >232 removed from queue, size13 >233 removed from queue, size12 >234 removed from queue, size11 >235 removed from queue, size10 >227 removed from queue, size9 >228 removed from queue, size8 >229 removed from queue, size7 >236 removed from queue, size15 >237 removed from queue, size14 >238 removed from queue, size13 >239 removed from queue, size12 >240 removed from queue, size11 >241 removed from queue, size10 >242 removed from queue, size9 >243 removed from queue, size8 >244 removed from queue, size7 >iterating cache ... >252 >251 >250 >249 >248 >247 >246 >245 >254 >253 >0 >At 07:40 PM 1/14/2002 +0100, you wrote: > >Juozas > > > > >-----Original Message----- > > >From: Juozas Baliuka [mailto:[EMAIL PROTECTED]] > > >Sent: Monday, January 14, 2002 8:20 PM > > >To: Jakarta Commons Developers List > > >Subject: RE: [simplestore] inital check in > > > > > > > > >Hi, > > >I read documentation tested all Reference types today. > > >The problem exists, object is cleared before reference is queued. > > >There is no way to flush expired object to stable storage if it has no > > >strong references, > > >but you can solve it this way : > > >WRITE: > > >0. Test queue, clear pooled references. > > >1. write object . > > >2. Add internal strong and Weak reference, make it a "new". > > >3. Put weak reference to cache. > > >4. release strong internal references from "old" objects. > > >READ: > > >0. Test queue, clear pooled references. > > >1. Search in Cashe. > > >2. Load object, if not found. > > >3. Add internal strong and Weak references, make object a "new". > > >4. Put weak reference to Cashe. > > >5. Release strong internal references from "old" objects. > > >6. return object. > > > > > >No need for "background cleanup". > > >I can implement this kind of cache, if it interesting for some body. > > >I have some my cache implementations, but they are not very "common" :) > > > >Kool, mate. How about a MRU based Memory Store which is implemented with > >week reference. We can call it SoftMRUMemoryStore or something else. Just > >send compilable code and I will check it in for you. Keep sending patches, > >it's valuable ;-). > > > >Stand by for patches > > > > Gerhard > > > > >At 05:28 PM 1/14/2002 +0100, you wrote: > > >>Juozas, > > >> > > >> >From: Juozas Baliuka [mailto:[EMAIL PROTECTED]] > > >> > > > >> >> > > >> >>StoreJanitorImpl: you can register your Memory Stores in > > >> >>this class. A background Thread checks if memory running > > >> >>slow in you JVM and if yes it frees some objects out of the > > >> >>registered Stores. > > >> > > > >> >Hi, > > >> >I think it is better to use java.lang.ref.* to solve problems related >to > > >> >memory management. > > >> >Application threads are not permitted in EJB container and I believe >GC > > >> >will do it better. > > >> > > > >> >It is from JDK documentation : > > >> >"Soft reference objects, which are cleared at the discretion of the > > garbage > > >> >collector in response to memory demand. Soft references are most > > often used > > >> >to implement memory-sensitive caches. " > > >> > > >>Aha, it's a shame but I never looked into this. But I do it right now! > > >>Does anybody(you) have experiences with this soft references and > > >>how to use them? > > >> > > >>Yes I know RTFM ;-)! > > >> > > >> Gerhard > > >> > > >>"A man with one watch knows what time it is, > > >>a man with two watches is never sure... > > >>(Albert Einstein)" > > >> > > >> > > >>-- > > >>To unsubscribe, > > e-mail: <mailto:[EMAIL PROTECTED]> > > >>For additional commands, e-mail: > > <mailto:[EMAIL PROTECTED]> > > > > > > > > > > > >-- > > >To unsubscribe, > > e-mail: <mailto:[EMAIL PROTECTED]> > > >For additional commands, e-mail: > > <mailto:[EMAIL PROTECTED]> > > > > > > > > > > > >-- > >To unsubscribe, e-mail: < >mailto:[EMAIL PROTECTED]> > >For additional commands, e-mail: < >mailto:[EMAIL PROTECTED]> > > > > > > > > > >-- >To unsubscribe, e-mail: < >mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: < >mailto:[EMAIL PROTECTED]> > >#### SynchronizedStore.java has been removed from this note on January 15 >2002 by Gerhard Froehlich >#### MemoryStore.java has been removed from this note on January 15 2002 by >Gerhard Froehlich >#### ObjectNotFoundException.java has been removed from this note on >January 15 2002 by Gerhard Froehlich >#### Store.java has been removed from this note on January 15 2002 by >Gerhard Froehlich >#### StoreException.java has been removed from this note on January 15 2002 >by Gerhard Froehlich >#### DublicateKeyException.java has been removed from this note on January >15 2002 by Gerhard Froehlich > > > > >-- >To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
