ArchSummit北京2015-《支付宝红包的双11挑战》-邱硕

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1、⽀付宝红包——双11的挑战与应对蚂蚁⾦服-⽀付核算技术部邱硕ၚۖڠୌᕁ۱ݎනັᧃᕁ۱ᕁ۱჉ວ̵ඪ՞य़ᕐ•᱾᪠༂ቘ•௔ᚆս۸•਻ᰁᦧ֌•ӱۓᰁᦧ֌•ᔮᕹכಷ᱾᪠༂ቘӤӥ჋᱾᪠ᕁ۱ٖ᮱ᅾᅩ•᪜๢಄᧣አ•ىᲫ᱾᪠௔ᚆᗌᵅ•لوᕟկᦢᳯᰁ•ᬳള࿰/ᕚᑕ࿰ᩢىᔮ•ളݗف჋Ӥݗ•ਂؙړᇆᅾᅩ•ӥ჋ᔮᕹᅾᅩ•හഝପᦕ୯ᅾᅩ•᯿॔඙๢಄ᕆೆړ๜ࣈ۸ғӞӻ๢಄۱ތӞེӱۓ᧗࿢ጱق᮱හഝ޾๐ۓ࢏قᒊړ૲ғӧ11ӱۓ᧗࿢໑ഝහഝړspanner/rpcRouter૲᪠ኧکӧ๢಄ҔӞེӱۓ᧗࿢ҁe.g.አᕁق҂՞ඪᤈᬰ۱server_1server_2…server_nserver_1server_

2、2…server_nclustercluster᱾᪠ጱಅํᔮᕹහഝҁํᇫாԆ҂හഝserver_1server_2…server_nserver_1server_2…server_nclusterclusterፘ૲ړmsgBroker…server_1server_2…server_nserver_1server_2…server_nوՁහഝۅ๜ғ cluster 
cluster෫ဩړ૲ጱوՁᔄහഝ᧛ٟړᐶྯӻbizdataDB_0DB_1…DB_19DB_0DB_1…DB_19๢಄๜ࣈᦢᳯۅ๜᮱ړྍshareᳵളdataread_dbྍread_dbᬳ

3、ള࿰ኒ᷀ᖨᥴߥଫጱ୑ࣈ᮱ᗟݎන(ᶾአ)ඪ՞ڹ჉ວඪ՞෸ᕁ۱ݢአᕁ۱ᕁ۱ಽಕඪ՞ᥢڞᓕቘᶼᓒഴګܔᅩཛྷ຃හഝ᪜ପܔᒟඪ՞ग़ᕁ۱ᶼᓒഴګܔᅩ——Ԕᥡ௔ᲁstarttransactionlockbudgetrecordandgetitsvalueܔᶼᓒރᰁғ(ӱۓ੶᷐ڣෙ᷐᪃ड़);subtractbudgetrecordby∆ےᲁ෸ᳵinsertbusinessorders...50tps—>800tpscommitᖽᎨےᲁ෸ᳵstarttransaction;insertbusinessorders...subtractbudgetrecordby∆ےᲁwhenvalueissu

4、fficientstarttransaction;commit෸ᳵlockbudgetrecordandgetitsvalue;<ӱۓ੶᷐ڣෙ᷐ӧ᪃>;ےᲁ෸ᳵrollback;starttransactionๅෛinsertbusinessorders...०ᨳsubtractbudgetrecordby∆ᖽᎨےᲁ෸ᳵwhenvalueissufficientӧտrollback;ےᲁᶼᓒഴګܔᅩ——MySQLpatchstarttransaction;addbusinessorders...EXE:updatesubtractbudgetrecordby∆ےᲁwhenvalueiss

5、ufficientOKcommit෸ᳵMySQLEXE:commitےᲁ෸ᳵԆᥝၾᘙࣁᗑᕶԻ԰•DBᒒๅෛރᓒᶼܔᲁන᯽ۓԪԻ൉ളፗᰁғ800tps—>4000tps•ଫአ੶൉Ի᧍ݙ०පᶼᓒഴګܔᅩ——ᶼᓒೆړ•ᶼᓒ࿜ଘೆړৼᶼᓒᵞٍ॓֐ᖽ௔sub_budgetbid:1•ৼᶼᓒ޾DBᇔቘପฉ੘sbid:1:10DB1sub_budgetbudgetbid:1id:1sbid:2Ӟᛘ௔
:100:10֐ᖽ௔DB2…sub_budgetbid:1sbid:10:10•Ꮶᇆᳯ᷌DB10•ৼᶼᓒ᪠ኧ௔ᚆᳯ᷌Ꮶᇆᳯ᷌sub_budgetsub_budgetbid

6、:1bid:1sbid:1sbid:1:1
:4sub_budgetsub_budgetbid:1bid:1sbid:2sbid:2

:2
:0sub_budgetၾᴻᏦᇆsub_budgetbid:1bid:1sbid:3sbid:3:1
:0…sub_budgetsub_budgetbid:1bid:1sbid:10sbid:10:0
:0•ಕګ๢ؑᤑۓձ෸ਧݣ•ଚݎ᥶ྍ୑ኞݎٺ•ګഴ௔Ӟࠔܔᦈଚ•Ҙ௔ᛘӞۓԪୗ૲ړৼᶼᓒጱ᪠ኧັᧃ᷐᪃ड़ጱৼᶼᓒ•᪜ପັᧃک᪠ኧᤒັᧃ᭗ᬦ᪠ኧᤒັᧃܔᅩᳯ᷌sub_budgetbid:1sbid:1•ৼᶼᓒಕٺ෸ๅෛܔᅩ:1

7、0DB1•ৼᶼᓒᭌೠ෸ັᧃܔᅩsub_budget_routesub_budgetbid:1;sbid:1;:10bid:1bid:1;sbid:2;:10sbid:2…:10
bid:1;sbid:10;:10DB2DB1…•ړٟ᧛۸սሲ᷇ෛๅ೅ᨮ᫷ٺᐶᖨਂsub_budgetbid:1sbid:10•ीړ۸ս௳מ԰Ի۸ս୚ᔱێᚆےᕟ:10DB10᪜ପೆᦕ୯ৼᶼᓒጱ᪠ኧັᧃ᷐᪃ड़ጱৼᶼ