R/W Splitting in Rails

384QMJUUJOHJO3BJMT ,PIFJ4V[VLJ

4FMGJOUSPEVDUJPO ,PIFJ4V[VLJ !FBHMFUNU 5XJUUFS (JU)VC ʜ ! $PPLQBE*OD

3BJMTBOENVMUJQMF%#T 3BJMTTVQQPSUTUPFTUBCMJTIDPOOFDUJPOTUPEJ⒎FSFOU EBUBCBTFTGPSFBDINPEFMT class BlogBase < ActiveRecord::Base self.abstract_class = true
establish_connection :production_blog end ! class Article < BlogBase; end class Category < BlogBase; end ! class Comment < ActiveRecord::Base establish_connection :production_comment end

3BJMTBOENVMUJQMF%#T 38TQMJUUJOHJT/05TVQQPSUFE XSJUFUPUIFNBTUFS SFBEGSPNUIFTMBWF 5IFSF`TTFWFSBMHFNTUPEP38TQMJUUJOHJO3BJMT PDUPQVT ECDIBSNFS NVMUJ@EC BDUT@BT@SFBEPOMZBCMF

PDUPQVT IUUQTHJUIVCDPNUDIBOEZPDUPQVT 4IBSEJOHBOE38TQMJUUJOHBSFTVQQPSUFE .JHSBUJPOJTBMTPTVQQPSUFE "DUJWFMZNBJOUBJOFE *UXPSLTXJUI3BJMT .BOZGFBUVSFT MBSHFDPEFCBTF

BDUT@BT@SFBEPOMZBCMF IUUQTSVCZHFNTPSHHFNTBDUT@BT@SFBEPOMZBCMF 0MEHFN MBTUVQMPBE $PPLQBEVTFEJUVOUJMSFDFOUUJNFT )FBWJMZNPEJpFEUPTVQQPSU3BJMT %P38TQMJUUJOHPOMZ +VTU-0$ BTPGPVS3BJMTTVQQPSUFE
WFSTJPO

38TQMJUUJOH 8FOFFE38TQMJUUJOHPOMZ BDUT@BT@SFBEPOMZBCMFJTUPPPMEBOEGSBHJMFUP BHHSFTTJWFDIBOHFTPG3BJMT *SFJOWFOUFEBOFXHFNMJLFBDUT@BT@SFBEPOMZBCMF IUUQTHJUIVCDPNFBHMFUNUTXJUDI@QPJOU

TXJUDI@QPJOU %P38TQMJUUJOHPOMZ /PTIBSEJOH /PNJHSBUJPOT 'FXFSNPOLFZQBUDIFT JOBXFMMPSEFSFE NBOOFS IUUQTXXXqJDLSDPNQIPUPTFMMSCSPXO

$POpHVSBUJPO EBUBCBTFZNM production_blog_master: adapter: mysql2 database: blog username: blog_writable host:
db-blog-master ! production_blog_slave: adapter: mysql2 database: blog username: blog_readonly host: db-blog-slave

$POpHVSBUJPO *OJUJBMJ[FS SwitchPoint.configure do |config| config.define_switch_point :blog, readonly: :"#{Rails.env}_blog_slave", writable:
:"#{Rails.env}_blog_master" end

$POpHVSBUJPO .PEFMT class Article < ActiveRecord::Base use_switch_point :blog end !
class Category < ActiveRecord::Base use_switch_point :blog end ! class Comment < ActiveRecord::Base use_switch_point :comment end

1SPYZ 5IFSF`TBQSPYZCFUXFFONPEFMTBOEEBUBCBTFT BOEJUEPFT38TQMJUUJOH Article Category Comment blog comment db-blog-master db-blog-slave
db-comment-master db-comment-slave .PEFM 1SPYZ TXJUDIQPJOU %BUBCBTF

4XJUDIJOH Model.with_readonly {}$POOFDUUPUIFTMBWF Model.with_writable {}$POOFDUUPUIFNBTUFS with_readonlyBOEwith_writableDBOCFOFTUFE "MNPTUUIFTBNFTFNBOUJDTXJUIfrom_slaveBOE from_masterPGBDUT@BT@SFBEPOMZBCMF

5ZQJDBMVTBHF 6TFwith_readonlyJOBSPVOE@BDUJPOPG(&5 SFRVFTU 6TFwith_writableGPSXSJUJOHPS4&-&$5GSPN UIFNBTUFS 6TFwith_readonlyGPSTPNFCMPDLTFOEQPJOUT UIBUFYFDVUFTIFBWZRVFSZ

*OQSPEVDUJPO $PPLQBEJTVTJOHTXJUDI@QPJOUGPSUIFNBJO BQQMJDBUJPO -PUTPG"DUJWF3FDPSENPEFMT JOUPUBM .VMUJQMFNBTUFSTMBWFEBUBCBTFT 5IPVTBOETPGEBUBCBTFDPOOFDUJPOT

1PMJDZ ,FFQGFXFSEFQFOEFODJFTPO3BJMTJNQMFNFOUBUJPO /PCSBODIJOHEFQFOEJOHPO ActiveRecord::VERSION 6TFDPNNPOMZVTFEGFBUVSFTBOECFIBWJPST %PPOFKPC38TQMJUUJOH %PJUBUUIFSJHIUMBZFS

$PODMVTJPO *DSFBUFEBTJNQMFHFNUIBUFOBCMFT38TQMJUUJOH JO3BJMT IUUQTHJUIVCDPNFBHMFUNUTXJUDI@QPJOU

R/W Splitting in Rails

R/W Splitting in Rails

Kohei Suzuki

More Decks by Kohei Suzuki

Other Decks in Programming

Featured

Transcript

384QMJUUJOHJO3BJMT ,PIFJ4V[VLJ

4FMGJOUSPEVDUJPO ,PIFJ4V[VLJ !FBHMFUNU 5XJUUFS (JU)VC ʜ ! $PPLQBE*OD

3BJMTBOENVMUJQMF%#T 3BJMTTVQQPSUTUPFTUBCMJTIDPOOFDUJPOTUPEJ⒎FSFOU EBUBCBTFTGPSFBDINPEFMT class BlogBase < ActiveRecord::Base self.abstract_class = true

3BJMTBOENVMUJQMF%#T 38TQMJUUJOHJT/05TVQQPSUFE XSJUFUPUIFNBTUFS SFBEGSPNUIFTMBWF 5IFSF`TTFWFSBMHFNTUPEP38TQMJUUJOHJO3BJMT PDUPQVT ECDIBSNFS NVMUJ@EC BDUT@BT@SFBEPOMZBCMF

PDUPQVT IUUQTHJUIVCDPNUDIBOEZPDUPQVT 4IBSEJOHBOE38TQMJUUJOHBSFTVQQPSUFE .JHSBUJPOJTBMTPTVQQPSUFE "DUJWFMZNBJOUBJOFE *UXPSLTXJUI3BJMT .BOZGFBUVSFT MBSHFDPEFCBTF

BDUT@BT@SFBEPOMZBCMF IUUQTSVCZHFNTPSHHFNTBDUT@BT@SFBEPOMZBCMF 0MEHFN MBTUVQMPBE $PPLQBEVTFEJUVOUJMSFDFOUUJNFT )FBWJMZNPEJpFEUPTVQQPSU3BJMT %P38TQMJUUJOHPOMZ +VTU-0$ BTPGPVS3BJMTTVQQPSUFE

38TQMJUUJOH 8FOFFE38TQMJUUJOHPOMZ BDUT@BT@SFBEPOMZBCMFJTUPPPMEBOEGSBHJMFUP BHHSFTTJWFDIBOHFTPG3BJMT *SFJOWFOUFEBOFXHFNMJLFBDUT@BT@SFBEPOMZBCMF IUUQTHJUIVCDPNFBHMFUNUTXJUDI@QPJOU

TXJUDI@QPJOU %P38TQMJUUJOHPOMZ /PTIBSEJOH /PNJHSBUJPOT 'FXFSNPOLFZQBUDIFT JOBXFMMPSEFSFE NBOOFS IUUQTXXXqJDLSDPNQIPUPTFMMSCSPXO

$POpHVSBUJPO EBUBCBTFZNM production_blog_master: adapter: mysql2 database: blog username: blog_writable host:

$POpHVSBUJPO *OJUJBMJ[FS SwitchPoint.configure do |config| config.define_switch_point :blog, readonly: :"#{Rails.env}_blog_slave", writable:

$POpHVSBUJPO .PEFMT class Article < ActiveRecord::Base use_switch_point :blog end !

1SPYZ 5IFSF`TBQSPYZCFUXFFONPEFMTBOEEBUBCBTFT BOEJUEPFT38TQMJUUJOH Article Category Comment blog comment db-blog-master db-blog-slave

4XJUDIJOH Model.with_readonly {}$POOFDUUPUIFTMBWF Model.with_writable {}$POOFDUUPUIFNBTUFS with_readonlyBOEwith_writableDBOCFOFTUFE "MNPTUUIFTBNFTFNBOUJDTXJUIfrom_slaveBOE from_masterPGBDUT@BT@SFBEPOMZBCMF

5ZQJDBMVTBHF 6TFwith_readonlyJOBSPVOE@BDUJPOPG(&5 SFRVFTU 6TFwith_writableGPSXSJUJOHPS4&-&$5GSPN UIFNBTUFS 6TFwith_readonlyGPSTPNFCMPDLTFOEQPJOUT UIBUFYFDVUFTIFBWZRVFSZ

*OQSPEVDUJPO $PPLQBEJTVTJOHTXJUDI@QPJOUGPSUIFNBJO BQQMJDBUJPO -PUTPG"DUJWF3FDPSENPEFMT JOUPUBM .VMUJQMFNBTUFSTMBWFEBUBCBTFT 5IPVTBOETPGEBUBCBTFDPOOFDUJPOT

1PMJDZ ,FFQGFXFSEFQFOEFODJFTPO3BJMTJNQMFNFOUBUJPO /PCSBODIJOHEFQFOEJOHPO ActiveRecord::VERSION 6TFDPNNPOMZVTFEGFBUVSFTBOECFIBWJPST %PPOFKPC38TQMJUUJOH %PJUBUUIFSJHIUMBZFS

$PODMVTJPO *DSFBUFEBTJNQMFHFNUIBUFOBCMFT38TQMJUUJOH JO3BJMT IUUQTHJUIVCDPNFBHMFUNUTXJUDI@QPJOU