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Gaurun / A general push notification server in Go
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Tatsuhiko Kubo
June 21, 2015
Technology
11
45k
Gaurun / A general push notification server in Go
Gaurun 〜A general push notification server in Go〜
Tatsuhiko Kubo
June 21, 2015
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Transcript
A general push notification server in Go Tatsuhiko Kubo@cubicdaiya Go
Conference summer@2015/06/21 Gaurun
@cubicdaiya / Tatsuhiko Kubo w 4PGUXBSF&OHJOFFS!.FSDBSJ *OD w *OGSBTUSVDUVSF&OHJOFFSJOH w
(P w OHJOYCVJME TMBDLCPBSE (BVSVO w OHJOY w OHY@TNBMM@MJHIU OHY@EZOBNJD@VQTUSFBN
Other Activities IUUQNP[BJDGNQPTUOHJOY
None
None
mercari.go w DVCJDEBJZBOHJOYCVJME w DVCJDEBJZBDBDIFDUM w DVCJDEBJZBTMBDLCPBSE w NFSDBSJ(BVSVO (PJOQSPEVDUJPO!.FSDBSJ
mercari.go w DVCJDEBJZBOHJOYCVJME w DVCJDEBJZBDBDIFDUM w DVCJDEBJZBTMBDLCPBSE w NFSDBSJ(BVSVO (PJOQSPEVDUJPO!.FSDBSJ
Gaurun https://github.com/mercari/gaurun
Gaurun w "HFOFSBMQVTIOPUJpDBUJPOTFSWFS GPSTNBSUQIPOFBQQMJDBUJPOT w 8SJUUFOJO(P w QSPYJOHQVTISFRVFTUTUP"1/TBOE($. w 4JNQMF)551"1*T
Overview ($. "1/T (BVSVO )5514 "1/T QSPUPDPM )551 1045QVTI #PEZJT+40/
$MJFOU
Why Go? w 3FRVJSFNFOUT w (PPEQFSGPSNBODF w )JHIDPODVSSFODZ w OFUIUUQJTHPPEDIPJDF
Why Go? w 1VTIJTTMPX w %VFUPOFUXPSLMBUFODZ w 4PNFPQFSBUJPO!.FSDBSJ w 4FOENJMMJPOQVTIBUPODFʂ
w )JHIDPODVSSFODZJTSFRVJSFEʂ
Why Go? w "TZODSPOPVTQVTIJTSFRVJSFE w QVTIJTUSJHHFSFEJO"1*TFSWFS w DPNNFOU MJLF CVZ
TFMM w "1*TFSWFSNVTUSFTQPOTFRVJDLMZ w "TZODISPOJ[BUJPOJTDPNQMJDBUFE w "1*TFSWFS!.FSDBSJJT"QBDIF 1)1
Push System @ Mercari
a year ago… ($. "1/T "1*4FSWFS "1*4FSWFS "1*4FSWFS "MMQVTIOPUJpDBUJPOTBSFTZODISPOPVT QVTI
half a year ago… ($. "1/T 8PSLFS "MMQVTIOPUJpDBUJPOTBSFBTZODISPOPVT 2VFVF 8PSLFS
8PSLFS QVTI EFRVFVF "1*4FSWFS "1*4FSWFS #BUDI4FSWFS FORVFVF "1*4FSWFS
But very complicated… w +PC2VFVF w 2. w .VMUJ1SPDFTT8PSLFSXJUI1)1 w
1)11BSBMMFMT1SFGPSL w 5IFBSDIJUFDUVSFJTOPUTDBMBCMF
Now… ($. "1/T (BVSVO (BVSVO (BVSVO /(*/9 "1*4FSWFS "1*4FSWFS "1*4FSWFS
#BUDI4FSWFS QVTI XJUI LFFQBMJWF )551 1045QVTI
Gaurun Internals
How Gaurun pushesʁ ($. "1/T (BVSVO )5514 "1/T QSPUPDPM )551
1045QVTI #PEZJT+40/ $MJFOU
Bootstrap Gaurun UIFDPEFCFMPXJTTJNQMJpFEGPSFYQMBOBUJPO TUBSUXPSLFSTGPSQVTI HBVSVO4UBSU1VTI8PSLFST XPSLFS/VN RVFVF/VN )551"1*T IUUQ)BOEMF'VOD
lQVTIz HBVSVO1VTI/PUJpDBUJPO)BOEMFS IUUQ)BOEMF'VOD lTUBUHPz TUBUT(P)BOEMFS IUUQ)BOEMF'VOD lTUBUBQQz HBVSVO4UBUT(BVSVO)BOEMFS ʜ TUBSU)551TFSWFS IUUQ-JTUFO"OE4FSWF lz OJM
start workers for push UIFDPEFCFMPXJTTJNQMJpFEGPSFYQMBOBUJPO GVOD4UBSU1VTI8PSLFST XPSLFS/VN RVFVF/VNJOU \ 2VFVFNBLF
DIBO/PUJpDBUJPO RVFVF/VN GPSJJXPSLFS/VNJ \ HPQVTI/PUJpDBUJPO8PSLFS ^ ^
POST /push UIFDPEFCFMPXJTTJNQMJpFEGPSFYQMBOBUJPO GVOD1VTI/PUJpDBUJPO)BOEMFS XIUUQ3FTQPOTF8SJUFS S IUUQ3FRVFTU \ BDDFQUTPOMZ1045NFUIPE NFUIPE$IFDL
SFBESFRVFTUCPEZ SCPEZ @JPVUJM3FBE"MM S#PEZ QBSTFSFRVFTUCPEZ WBSSFR(BVSVO3FRVFTU(BVSVO @KTPO6ONBSTIBM SCPEZ SFR(BVSVO FORVFVFOPUJpDBUJPOBTZODISPOPVTMZ HPFORVFVF/PUJpDBUJPOT SFR(BVSVO/PUJpDBUJPOT SFUVSOUIFSFTQPOTF TFOE3FQPOTF X lPLz IUUQ4UBUVT0, ^
enqueue Notifications UIFDPEFCFMPXJTTJNQMJpFEGPSFYQMBOBUJPO GVODFORVFVF/PUJpDBUJPOT OT<>3FRVFTU/PUJpDBUJPO \ GPS@ OPUJpDBUJPOSBOHFOT\ 2VFVFOPUJpDBUJPO ^
^
pushNotificationWorker UIFDPEFCFMPXJTTJNQMJpFEGPSFYQMBOBUJPO GVODQVTI/PUJpDBUJPO8PSLFS \ GPS\ OPUJpDBUJPO2VFVF TXJUDIOPUJpDBUJPO1MBUGPSN\ DBTF1MBUGPSN*PT QVTI/PUJpDBUJPO*PT
DBTF1MBUGPSN"OESPJE QVTI/PUJpDBUJPO*"OESPJE ^ ^ ^
Why workers with goroutine and queue with channel are static?
w 6OMJNJUFEHPSPVUJOFT w 1FSGPSNBODFTMPXTEPXO w #FDBVTFQVTIJTTMPX w DIBOOFMJTSFRVJSFEGPSLFFQJOHXPSLFSTXBJUJOH w (P`TDIBOOFMTJ[FJTOPUVOMJNJUFE
Gaurun Features
HTTP APIs w 1045QVTI w (&5TUBUHP w (&5TUBUBQQ
POST /push "DDFQUTCVMLFEQVTISFRVFTUXJUI+40/ \ lOPUJpDBUJPOz< \ lUPLFOTz<lYYYz> lQMBUGPSNz
lNFTTBHFzl)FMMP J04z lCBEHFz lTPVOEzlEFGBVMUz lFYQJSZz ^ \ lUPLFOTz<lZZZz> lQMBUGPSNz lNFTTBHFzl)FMMP "OESPJEz lDPMMBQTF@LFZzlVQEBUFz lEFMBZ@XIJMF@JEMFzUSVF lUJNF@UP@MJWFz ^ > ^
GET /stat/go DVSMTIUUQTUBUHP \ lUJNFz lHP@WFSTJPOzlHPz lHP@PTzlMJOVYz
lHP@BSDIzlBNEz lDQV@OVNz lHPSPVUJOF@OVNz lHPNBYQSPDTz lDHP@DBMM@OVNz lNFNPSZ@BMMPDz lNFNPSZ@UPUBM@BMMPDz lNFNPSZ@TZTz lNFNPSZ@MPPLVQTz lNFNPSZ@NBMMPDTz lNFNPSZ@GSFFTz ɾ ɾ ɾ 3FUVSOTBTUBUJDUJDTGPS(PSVOUJNF
GET /stat/app DVSMTIUUQTUBUBQQ \ lRVFVF@NBYz lRVFVF@VTBHFz lJPTz\ lQVTI@TVDDFTTz
lQVTI@FSSPSz ^ lBOESPJEz\ lQVTI@TVDDFTTz lQVTI@FSSPSz ^ ^ 3FUVSOTBTUBUJDUJDTGPS(BVSVO
More details… IUUQTHJUIVCDPNNFSDBSJHBVSVOCMPCNBTUFS41&$NE
Gaurun Configuration HBVSVODHBVSVOUPNM
Gaurun Configuration (TOML) <DPSF> QPSUlz XPSLFST RVFVFT <BOESPJE> BQJLFZlʜz <JPT>
QFN@DFSU@QBUIlQBUIDFSUQFNz FN@LFZ@QBUIlQFNLFZQFNz TBOECPYGBMTF UJNFPVU@FSSPS
Optimization w DPSFXPSLFST w OVNCFSPGXPSLFSTGPSQVTI w DPSFRVFVFT w TJ[FPGDIBOOFMGPSQVTIXPSLFST w
JPTUJNFPVU@FSSPS w UJNFPVUGPSXBJUJOHFSSPSGSPN"1/T w EFGBVMUDPOpHVSBUJPOJTDPTFSWBUJWF
More details… IUUQTHJUIVCDPNNFSDBSJHBVSVOCMPCNBTUFS$0/'*(63"5*0/NE
Monitoring Gaurun
Monitoring Gaurun w (&5TUBUHP w 3FUVSOTBTUBUJDUJDTGPS(PSVOUJNF w (&5TUBUBQQ w 3FUVSOTBTUBUJDUJDTGPS(BVSVO
Monitoring Gaurun with Zabbix VTFSQBSBNFUFS@HPMBOH@TUBUTDPOG 6TFS1BSBNFUFSHPMBOHTUBUT< > DVSMTIUUQTUBUHPcKR
Monitoring server written in Go w .FNPSZVTBHFBOEBMMPDBUJPOT w ($DPOEJUJPO w
OVNCFSPGHPSPVUJOFT w DIBOOFMVTBHF w OVNCFSPGDPOOFDUJPOT SFRVFTUTTFD FUDʜ
The case of Gaurun w (&5TUBUHP w .FNPSZVTBHFBOEBMMPDBUJPOT w ($DPOEJUJPO
w OVNCFSPGHPSPVUJOFT w (&5TUBUBQQ w DIBOOFMVTBHF w OHY@IUUQ@TUVC@TUBUVT@NPEVMF w OVNCFSPGDPOOFDUJPOT SFRVFTUTTFD FUDʜ
Potential problems w HPSPVUJOFMFBL w -JOFBSJODSFBTFPGOVNCFSPGHPSPVUJOFT w *U`TBNPSFTFSJPVTCVHUIBONFNPSZMFBL w DIBOOFMCMPDLJOH
w DIBOOFMTJ[FJTMJNJUFE
Library For Monitoring Go-runtime w GVLBUBHPMBOHTUBUTBQJIBOEMFS w 7FSZVTFGVM w (&5TUBUHPJTQPXFSFECZUIJT
Summary w (PJTTVJUBCMFGPSTJNQMF)551"1*TFSWFS w (BVSVOXPSLTpOF w .POJUPSJOHTFSWFSXSJUUFOJO(P w $BSFQPUFOUJBMQSPCMFNTCMPX w
HPSPVUJOFMFBL w DIBOOFMCMPDLJOH
ਓࡐืूதʂ