ãã©ãŒã«ã ãã¬ã©ã³ã¹ãšé«å¯çšæ§ã¯å€§ããªãããã¯ã§ãããããRabbitMQ ãš Kafka ã«ã€ããŠã¯å¥ã®èšäºã«å
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ãããã®æŠå¿µã¯ãã·ã¹ãã ã«é害ãçºçãããšãã«ã·ã¹ãã ãã©ã®ããã«åäœãããã説æããŸãã ãããã¯ãŒã¯æ¥ç¶ã®é害ããµãŒããŒã®é害ãããŒããã©ã€ãã®é害ãã¬ããŒãž ã³ã¬ã¯ã·ã§ã³ããã±ããæ倱ããŸãã¯ãããã¯ãŒã¯æ¥ç¶ã®é床äœäžã«ãããµãŒããŒã®äžæçãªäœ¿çšäžèœã ããããã¹ãŠãããŒã¿ã®æ倱ã競åã«ã€ãªããå¯èœæ§ããããŸãã å®å
šã«äžè²«æ§ããã (ããŒã¿æ倱ãããŒã¿ã®çžéããªã)ããã¹ãŠã®é害ã·ããªãªã«å¯Ÿå¿ã§ãã (èªã¿åããšæžã蟌ã¿ãåãå
¥ãã) äž¡æ¹ã®ã·ã¹ãã ãæ§ç¯ããããšã¯äºå®äžäžå¯èœã§ããããšãããããŸããã
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èŠãããããšãããããŸãã è¯ããã¥ãŒã¹ã¯ãRabbitMQ ã§ã¯ãã®éžæãå¯èœã§ãããšããããšã§ãã äžè²«æ§ãé«ããããã¢ã¯ã»ã·ããªãã£ãé«ãããããæ¹åã«ãã©ã³ã¹ãå€ããã«ã¯ããã®ãããªããªã¿ã¯çãªãã¬ããŒãå¿
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RabbitMQ ã«ã¯ãèä¹ æ§ãšéèä¹ æ§ã® XNUMX çš®é¡ã®ãã¥ãŒããããŸãã ãã¹ãŠã®ãã¥ãŒã¯ Mnesia ããŒã¿ããŒã¹ã«ä¿åãããŸãã æ°žç¶ãã¥ãŒã¯ããŒãã®èµ·åæã«åã¢ããã¿ã€ãºããããããåèµ·åãã·ã¹ãã ã¯ã©ãã·ã¥ããŸãã¯ãµãŒã㌠ã¯ã©ãã·ã¥ãçºçããŠã (ããŒã¿ãä¿æãããŠããéã) åç¶ããŸãã ããã¯ãã«ãŒãã£ã³ã° (亀æ) ãšãã¥ãŒã®å埩åããããšå®£èšããŠããéãããã¥ãŒ/ã«ãŒãã£ã³ã° ã€ã³ãã©ã¹ãã©ã¯ãã£ããªã³ã©ã€ã³ã«æ»ãããšãæå³ããŸãã
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ãã¥ãŒã«èä¹ æ§ããããããšãã£ãŠããã®ãã¹ãŠã®ã¡ãã»ãŒãžãããŒãã®åèµ·ååŸãåç¶ãããšã¯éããŸããã çºè¡è ã«ãã£ãŠèšå®ãããã¡ãã»ãŒãžã®ã¿ æç¶å¯èœãª ïŒæç¶çïŒã æ°žç¶çãªã¡ãã»ãŒãžã¯ãããŒã«ãŒã«è¿œå ã®è² è·ããããããŸãããã¡ãã»ãŒãžã®æ倱ã蚱容ã§ããªãå Žåã¯ãä»ã«éžæè¢ã¯ãããŸããã
ç±³ã 1. æç¶å¯èœæ§ãããªãã¯ã¹
ãã¥ãŒãã©ãŒãªã³ã°ã«ããã¯ã©ã¹ã¿ãªã³ã°
ãããŒã«ãŒã®åªå€±ã«èããããã«ã¯ãåé·æ§ãå¿ èŠã§ãã è€æ°ã® RabbitMQ ããŒãã XNUMX ã€ã®ã¯ã©ã¹ã¿ãŒã«çµåããè€æ°ã®ããŒãéã§ãã¥ãŒãè€è£œããããšã§åé·æ§ãè¿œå ã§ããŸãã ããããããšã§ãXNUMX ã€ã®ããŒãã«é害ãçºçããå Žåã§ããããŒã¿ã倱ããããå©çšå¯èœãªç¶æ ãç¶æãããŸãã
ãã¥ãŒã®ãã©ãŒãªã³ã°:
- ãã¹ãŠã®æžã蟌ã¿ããã³èªã¿åãã³ãã³ããåä¿¡ãã XNUMX ã€ã®ã¡ã€ã³ ãã¥ãŒ (ãã¹ã¿ãŒ)
- ã¡ã€ã³ãã¥ãŒãããã¹ãŠã®ã¡ãã»ãŒãžãšã¡ã¿ããŒã¿ãåä¿¡ãã XNUMX ã€ä»¥äžã®ãã©ãŒã ãããã®ãã©ãŒã¯ã¹ã±ãŒãªã³ã°ã®ããã«ååšããã®ã§ã¯ãªããçŽç²ã«åé·æ§ã®ããã«ååšããŸãã
ç±³ã 2. ãã¥ãŒã®ãã©ãŒãªã³ã°
ãã©ãŒãªã³ã°ã¯é©åãªããªã·ãŒã«ãã£ãŠèšå®ãããŸãã ããã§ã¯ãã¬ããªã±ãŒã·ã§ã³ä¿æ°ãéžæãããããã¥ãŒãé 眮ããããŒããéžæãããã§ããŸãã äŸ:
ha-mode: all
ha-mode: exactly, ha-params: 2
(XNUMX ã€ã®ãã¹ã¿ãŒãš XNUMX ã€ã®ãã©ãŒ)ha-mode: nodes, ha-params: rabbit@node1, rabbit@node2
çºè¡è ã®ç¢ºèª
äžè²«ããèšé²ãéæããã«ã¯ãçºè¡è 確èªãå¿ èŠã§ãã ãããããªããšãã¡ãã»ãŒãžã倱ãããå±éºããããŸãã ã¡ãã»ãŒãžããã£ã¹ã¯ã«æžã蟌ãŸããåŸã確èªãçºè¡è ã«éä¿¡ãããŸãã RabbitMQ ã¯ãåä¿¡æã§ã¯ãªããæ°çŸããªç§çšåºŠã®åšæã§ã¡ãã»ãŒãžããã£ã¹ã¯ã«æžã蟌ã¿ãŸãã ãã¥ãŒããã©ãŒãªã³ã°ããããšããã¹ãŠã®ãã©ãŒãã¡ãã»ãŒãžã®ã³ããŒããã£ã¹ã¯ã«æžã蟌ãã åŸã§ã®ã¿ã確èªå¿çãéä¿¡ãããŸãã ã€ãŸãã確èªã䜿çšãããšé 延ãå¢å ããŸãããããŒã¿ã®ã»ãã¥ãªãã£ãéèŠãªå Žåã¯ç¢ºèªãå¿ èŠã«ãªããŸãã
ãã§ã€ã«ãªãŒããŒãã¥ãŒ
ãããŒã«ãŒãçµäºãŸãã¯ã¯ã©ãã·ã¥ãããšããã®ããŒãäžã®ãã¹ãŠã®ãã¥ãŒ ãªãŒã㌠(ãã¹ã¿ãŒ) ãäžç·ã«ã¯ã©ãã·ã¥ããŸãã 次ã«ãã¯ã©ã¹ã¿ãŒã¯åãã¹ã¿ãŒã®æãå€ããã©ãŒãéžæãããããæ°ãããã¹ã¿ãŒãšããŠææ ŒãããŸãã
ç±³ã 3. è€æ°ã®ãã©ãŒãªã³ã°ããããã¥ãŒãšãã®ããªã·ãŒ
ãããŒã«ãŒ 3 ãããŠã³ããŸãã ãããŒã«ãŒ 2 ã®ãã¥ãŒ C ãã©ãŒããã¹ã¿ãŒã«ææ ŒããŠããããšã«æ³šæããŠãã ããã ãŸãããããŒã«ãŒ 1 ã®ãã¥ãŒ C ã«å¯ŸããŠæ°ãããã©ãŒãäœæãããããšã«ã泚æããŠãã ããã RabbitMQ ã¯åžžã«ãããªã·ãŒã§æå®ãããã¬ããªã±ãŒã·ã§ã³ä¿æ°ãç¶æããããšããŸãã
ç±³ã 4. ãããŒã«ãŒ 3 ã倱æãããã¥ãŒ C ã倱æããŸãã
次ã®ãããŒã«ãŒ 1 ãèœã¡ãŸã! ãããŒã«ãŒã¯ XNUMX 人ã ãæ®ã£ãŠããŸãã ãã¥ãŒ B ãã©ãŒããã¹ã¿ãŒã«ææ ŒããŸãã
å³ã 5
ãããŒã«ãŒ 1 ãè¿ããŸããããããŒã«ãŒã®æ倱ãšå埩åŸã«ããŒã¿ãã©ã®çšåºŠåç¶ãããã«é¢ä¿ãªãããã©ãŒåããããã¹ãŠã®ãã¥ãŒ ã¡ãã»ãŒãžã¯åèµ·åæã«ç Žæ£ãããŸãã çµæãçããå¯èœæ§ããããããããã¯æ³šæããããšãéèŠã§ãã ãããã®åœ±é¿ã«ã€ããŠã¯åŸã»ã©èŠãŠãããŸãã ãããã£ãŠããããŒã«ãŒ 1 ã¯åã³ã¯ã©ã¹ã¿ãŒã®ã¡ã³ããŒã«ãªããã¯ã©ã¹ã¿ãŒã¯ããªã·ãŒã«æºæ ããããšããããããããŒã«ãŒ 1 ã«ãã©ãŒãäœæããŸãã
ãã®å ŽåãããŒã¿ãšåæ§ã«ãããŒã«ãŒ 1 ãå®å šã«å€±ãããŠããããããã©ãŒåãããŠããªããã¥ãŒ B ã¯å®å šã«å€±ãããŠããŸãã
ç±³ã 6. ãããŒã«ãŒ 1 ããµãŒãã¹ã«æ»ããŸã
ãããŒã«ãŒ 3 ããªã³ã©ã€ã³ã«æ»ã£ãã®ã§ããã¥ãŒ A ãš B ã¯ãHA ããªã·ãŒãæºããããã«ãã®äžã«äœæããããã©ãŒãåãæ»ããŸãã ããããçŸåšã¯ãã¹ãŠã®ã¡ã€ã³ ãã¥ãŒã XNUMX ã€ã®ããŒãäžã«ãããŸãã ããã¯çæ³çã§ã¯ãããŸãããããŒãéã§åçã«åæ£ããæ¹ãè¯ãã§ãã æ®å¿µãªããããã¹ã¿ãŒã®ãã©ã³ã¹ãå調æŽããããã®ãªãã·ã§ã³ã¯ããŸããããŸããã æåã«ãã¥ãŒã®åæã確èªããå¿ èŠãããããããã®åé¡ã«ã€ããŠã¯åŸã§ããäžåºŠèª¬æããŸãã
ç±³ã 7. ãããŒã«ãŒ 3 ã¯ãµãŒãã¹ã«æ»ããŸãã ãã¹ãŠã®ã¡ã€ã³ãã¥ãŒã XNUMX ã€ã®ããŒãäžã«ãããŸãã
ããã§ããã©ãŒãã©ã®ããã«åé·æ§ãšèé害æ§ãæäŸââãããã«ã€ããŠç解ã§ããã¯ãã§ãã ããã«ãããåäžããŒãã«é害ãçºçããå Žåã§ãå¯çšæ§ã確ä¿ãããããŒã¿æ倱ãé²æ¢ãããŸãã ããããå®éã«ã¯ãã£ãšè€éãªã®ã§ããŸã çµãã£ãŠããŸããã
Ð¡ÐžÐœÑ ÑПМОзаÑОÑ
æ°ãããã©ãŒãäœæãããšããã¹ãŠã®æ°ããã¡ãã»ãŒãžãåžžã«ãã®ãã©ãŒãšä»ã®ãã©ãŒã«ã¬ããªã±ãŒããããŸãã ãã¹ã¿ãŒ ãã¥ãŒå ã®æ¢åã®ããŒã¿ã«ã€ããŠã¯ãæ°ãããã©ãŒã«è€è£œããããšãã§ããããããã¹ã¿ãŒã®å®å šãªã³ããŒã«ãªããŸãã ãŸããæ¢åã®ã¡ãã»ãŒãžãè€è£œããªãããšãéžæããŠãã¡ã€ã³ ãã¥ãŒãšæ°ãããã©ãŒãæéå ã«åæãããæ°ããã¡ãã»ãŒãžãæåŸå°Ÿã«å°çããæ¢åã®ã¡ãã»ãŒãžãã¡ã€ã³ ãã¥ãŒã®å é ããåºãããã«ããããšãã§ããŸãã
ãã®åæã¯èªåãŸãã¯æåã§å®è¡ããããã¥ãŒ ããªã·ãŒã䜿çšããŠç®¡çãããŸãã äŸãèŠãŠã¿ãŸãããã
ãã©ãŒãªã³ã°ããããã¥ãŒã XNUMX ã€ãããŸãã ãã¥ãŒ A ã¯èªåçã«åæããããã¥ãŒ B ã¯æåã§åæãããŸãã ã©ã¡ãã®ãã¥ãŒã«ã XNUMX åã®ã¡ãã»ãŒãžãå«ãŸããŠããŸãã
ç±³ã 8. ç°ãªãåæã¢ãŒããæ〠XNUMX ã€ã®ãã¥ãŒ
çŸåšããããŒã«ãŒ 3 ã«è² ããŠããŸãã
ç±³ã 9. ãããŒã«ãŒ 3 ãèœã¡ã
ãããŒã«ãŒ 3 ããµãŒãã¹ã«æ»ããŸãã ã¯ã©ã¹ã¿ãŒã¯æ°ããããŒãäžã®åãã¥ãŒã®ãã©ãŒãäœæããæ°ãããã¥ãŒ A ããã¹ã¿ãŒãšèªåçã«åæããŸãã ãã ããæ°ãããã¥ãŒ B ã®ãã©ãŒã¯ç©ºã®ãŸãŸã§ãã ãã®ããã«ããŠããã¥ãŒ A ã«ã¯å®å šãªåé·æ§ã確ä¿ãããæ¢åã®ãã¥ãŒ B ã¡ãã»ãŒãžã«ã¯ãã©ãŒã XNUMX ã€ã ã確ä¿ãããŸãã
ç±³ã 10. ãã¥ãŒ A ã®æ°ãããã©ãŒã¯æ¢åã®ã¡ãã»ãŒãžããã¹ãŠåä¿¡ããŸããããã¥ãŒ B ã®æ°ãããã©ãŒã¯åä¿¡ããŸããã
ããã« 2 åã®ã¡ãã»ãŒãžãäž¡æ¹ã®ãã¥ãŒã«å°çããŸãã ãã®åŸããããŒã«ãŒ 1 ãã¯ã©ãã·ã¥ãããã¥ãŒ A ã¯ãããŒã«ãŒ XNUMX äžã«ããæãå€ããã©ãŒã«ããŒã«ããã¯ããŸããé害ãçºçããŠãããŒã¿ã¯å€±ãããŸããã ãã¥ãŒ B ã§ã¯ããã¹ã¿ãŒã« XNUMX åã®ã¡ãã»ãŒãžãããããã©ãŒã«ã¯ XNUMX åã ãã®ã¡ãã»ãŒãžããããŸããããã¯ããã®ãã¥ãŒãå ã® XNUMX åã®ã¡ãã»ãŒãžãè€è£œããŠããªãããã§ãã
ç±³ã 11. ãã¥ãŒ A ã¯ã¡ãã»ãŒãžã倱ãããšãªããããŒã«ãŒ 1 ã«ããŒã«ããã¯ããŸãã
ããã« 1 åã®ã¡ãã»ãŒãžãäž¡æ¹ã®ãã¥ãŒã«å°çããŸãã ããã§ããããŒã«ãŒ XNUMX ãã¯ã©ãã·ã¥ããŸããããã¥ãŒ A ã¯ã¡ãã»ãŒãžã倱ãããšãªãç°¡åã«ãã©ãŒã«åãæ¿ãããŸãã ãã ãããã¥ãŒ B ã«ã¯åé¡ããããŸãã ãã®æç¹ã§ãå¯çšæ§ãŸãã¯äžè²«æ§ã®ãããããæé©åã§ããŸãã
ã¢ã¯ã»ã·ããªãã£ãæé©åãããå Žåã¯ãããªã·ãŒ ha-倱ææã®ããã¢ãŒã ã«ã€ã³ã¹ããŒã«ããå¿ èŠããããŸã åžžã«ã ããã¯ããã©ã«ãå€ã§ãããããããªã·ãŒããŸã£ããæå®ããªãããšãã§ããŸãã ãã®å Žåãåºæ¬çã«ãéåæãã©ãŒã§ã®é害ã蚱容ãããŸãã ããã«ããã¡ãã»ãŒãžã¯å€±ãããŸããããã¥ãŒã¯èªã¿åãããã³æžã蟌ã¿å¯èœã®ãŸãŸã§ãã
ç±³ã 12. ãã¥ãŒ A ã¯ãã¡ãã»ãŒãžã倱ãããšãªããããŒã«ãŒ 3 ã«ããŒã«ããã¯ãããŸãã ãã¥ãŒ B ããããŒã«ãŒ 3 ã«ããŒã«ããã¯ããXNUMX åã®ã¡ãã»ãŒãžã倱ããã
åãä»ããå¯èœã§ã ha-promote-on-failure
æå³ã« when-synced
ã ãã®å Žåããã¥ãŒã¯ãã©ãŒã«ããŒã«ããã¯ãã代ããã«ãããŒã¿ãæã€ãããŒã«ãŒ 1 ããªã³ã©ã€ã³ ã¢ãŒãã«æ»ããŸã§åŸ
æ©ããŸãã 埩垰åŸãã¡ã€ã³ ãã¥ãŒã¯ããŒã¿æ倱ãªããããŒã«ãŒ 1 ã«æ»ããŸãã ããŒã¿ã®ã»ãã¥ãªãã£ã®ããã«å¯çšæ§ãç ç²ã«ãªããŸãã ãã ããããã¯ããŒã¿ã®å®å
šãªæ倱ã«ã€ãªããå¯èœæ§ãããå±éºãªã¢ãŒãã§ããããã«ã€ããŠã¯åŸã»ã©èª¬æããŸãã
ç±³ã 13. ãããŒã«ãŒ 1 ã倱ã£ãåŸããã¥ãŒ B ã¯å©çšã§ããªããŸãŸã«ãªã
ãèªååæã¯äœ¿ããªãã»ããè¯ãã®ã§ãã?ããšçåã«æããããããããŸããã çãã¯ãåæã¯ãããã¯æäœã§ãããšããããšã§ãã åæäžãã¡ã€ã³ ãã¥ãŒã¯èªã¿åããŸãã¯æžã蟌ã¿æäœãå®è¡ã§ããŸããã
äŸãèŠãŠã¿ãŸãããã ä»ã§ã¯éåžžã«é·ãè¡åãã§ããŠããŸãã ã©ãããã°ãã®ãããªå€§ããã«æé·ããããšãã§ããã®ã§ããããïŒ ããã€ãã®çç±ã§ïŒ
- ãã¥ãŒã¯ç©æ¥µçã«äœ¿çšãããŸãã
- ãããã¯é«éãã¥ãŒã§ãããçŸæç¹ã§ã¯ã³ã³ã·ã¥ãŒããŒã®é床ãé ã
- é«éãã¥ãŒã§é害ãçºçããæ¶è²»è ãè¿œãã€ãã€ã€ãããŸã
ç±³ã 14. ç°ãªãåæã¢ãŒããæ〠XNUMX ã€ã®å€§ããªãã¥ãŒ
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