Обсуждение: GSoC Proposal - Caching query results in pgpool-II
Hello<br /><br /> I am sending my proposal about Google Summer Of Code2011. <br />It would be nice if you could give me
youropinion.<br /><br />・title<br /><br />Caching query results in pgpool-II<br /><br /><br />・Synopsis<br /><br
/>Pgpool-IIhas query caching functionality using storage provided by<br /> dedicated PostgreSQL ("system database").
Thishas several drawbacks<br />however. 1)it is slow because it needs to access disk storage 2)it<br />does not
invalidatethe cache automatically.<br /><br />This proposal tries to solve these problems.<br /><br />- To speed up the
cacheaccess, it will be placed on memory, rather<br /> than database. The memory will be put on shared memory or
external<br/> memory services such as memcached so that the cache can be shared by<br /> multiple sessions. Old
cacheentries will be deleted by LRU manner.<br /><br />- The cache will be invalidated automatically upon the timing
whenthe<br /> relevant tables are updated. Note that this is not always possible<br /> because the query result
mightcome from multiple tables, views or<br /> even functions. In this case the cache will be invalidated by<br />
timeout(orthey are not cached at all).<br /><br />- Fine tuning knobs need to be invented to control the cache
behavior<br/> though they are not clear at this moment.<br /><br /><br />・Benefits to the PostgreSQL Community:<br
/><br/><br />Query caching will effectively enhance the performance of PostgreSQL<br />and this project will contribute
toincrease the number of users of<br /> PostgreSQL, who need more high performance database systems.<br /><br />Note
thatimplementing query cache in pgpool-II will bring merits not<br />only to the latest version of PostgreSQL but to
theprevious releases<br />of PostgreSQL.<br /><br /><br />・Project Schedule<br /><br />-April<br /> preparation <br
/><br/>-May 1 - May 22 <br /> write a specification<br /><br />-May 23 - June 19<br /> coding<br /><br />-June 20 -
July22<br /> test<br /><br />-July 23 - August 12<br /> Complete of coding and test, commit<br /><br /><br />・Personal
Dataand Biographical Information<br /><br /> Name : Masanori Yamazaki<br /> Born : 23.1.1981<br /> School :Currently I
learncontemporary philosophy, culture and literature at Waseda University in Japan.<br /> Coding :<br /> 1.About five
yearsjob as web application programer(PHP, Java).<br /> 2.I experienced projects used framework such as Symfony, Zend
Framework,CakePHP, and Struts.<br /> 3.I am interested in OSS and like coding.<br /><br /><br />Regards<br /><br /><br
/>
I like this proposal. This would bring big benefit to both the PostgreSQL and the pgpool project. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp > Hello > > I am sending my proposal about Google Summer Of Code2011. > It would be nice if you could give me your opinion. > > ・title > > Caching query results in pgpool-II > > > ・Synopsis > > Pgpool-II has query caching functionality using storage provided by > dedicated PostgreSQL ("system database"). This has several drawbacks > however. 1)it is slow because it needs to access disk storage 2)it > does not invalidate the cache automatically. > > This proposal tries to solve these problems. > > - To speed up the cache access, it will be placed on memory, rather > than database. The memory will be put on shared memory or external > memory services such as memcached so that the cache can be shared by > multiple sessions. Old cache entries will be deleted by LRU manner. > > - The cache will be invalidated automatically upon the timing when the > relevant tables are updated. Note that this is not always possible > because the query result might come from multiple tables, views or > even functions. In this case the cache will be invalidated by > timeout(or they are not cached at all). > > - Fine tuning knobs need to be invented to control the cache behavior > though they are not clear at this moment. > > > ・Benefits to the PostgreSQL Community: > > > Query caching will effectively enhance the performance of PostgreSQL > and this project will contribute to increase the number of users of > PostgreSQL, who need more high performance database systems. > > Note that implementing query cache in pgpool-II will bring merits not > only to the latest version of PostgreSQL but to the previous releases > of PostgreSQL. > > > ・Project Schedule > > -April > preparation > > -May 1 - May 22 > write a specification > > -May 23 - June 19 > coding > > -June 20 - July 22 > test > > -July 23 - August 12 > Complete of coding and test, commit > > > ・Personal Data and Biographical Information > > Name : Masanori Yamazaki > Born : 23.1.1981 > School :Currently I learn contemporary philosophy, culture and literature > at Waseda University in Japan. > Coding : > 1.About five years job as web application programer(PHP, Java). > 2.I experienced projects used framework such as Symfony, Zend Framework, > CakePHP, and Struts. > 3.I am interested in OSS and like coding. > > > Regards
2011/4/5 Masanori Yamazaki <myamazaki23@gmail.com>: > Hello > > I am sending my proposal about Google Summer Of Code2011. > It would be nice if you could give me your opinion. Fantastic! Please submit your proposal through the GSoC website: http://www.google-melange.com/gsoc/profile/student/google/gsoc2011 -selena -- http://chesnok.com