ok.tech: Cassandra meetup

Mukugwira ntchito ndi Apache Cassandra NoSQL yosungirako?

Pa May 23, Odnoklassniki akuitanira anthu odziwa bwino ntchito ku ofesi yawo ku St kukumana, wodzipereka kugwira ntchito ndi Apache Cassandra. Chofunikira ndi zomwe mwakumana nazo ndi Cassandra komanso kufuna kugawana nawo.
Kulembetsa kwa chochitika

Tili bwino anayamba kugwiritsa ntchito Apache Cassandra mu 2010 kuti asunge zithunzi. Pakali pano ndife ogwiritsa ntchito kwambiri Apache Cassandra pa RuNet komanso m'modzi wamkulu kwambiri ku Europe. Tili ndi magulu opitilira zana omwe amagwiritsidwa ntchito posungira zidziwitso zosiyanasiyana zazinthu - makalasi, macheza, mauthenga, komanso kuyang'anira zidziwitso zofunika kwambiri za zomangamanga - kujambula midadada yomveka pama disks osungira zazikulu zamabina - chosungira chimodzi chozizira, kasamalidwe ka data ka mtambo wamkati mtambo umodzi ndi zina zotero.

Zonse, mu Ophunzira nawo Cassandra amayendetsa ma petabytes a data kudutsa masauzande ambiri. Panthawiyi, tapeza zambiri pakuwongolera, kupanga ndi kugwiritsa ntchito mayankho kutengera Cassandra ndipo ngakhale kupanga zathu. ndi NewSQL transaction database.

Tsopano tikufuna kugawana nanu zonsezi - kugwiritsa ntchito zochitika zenizeni kuchokera muzochita komanso popanda zinsinsi; Chochitikacho chidzachitika mwa njira ya zokambirana zamoyo pakati pa otenga nawo mbali, zomwe zikutanthauza kuti zokambiranazo zidzatenga nthawi yambiri. Akatswiri OK okonzeka kugawana malingaliro awo ndi njira zawo. Chochitikacho chikhala ndi Oleg Anastasyev и Alexander Khristoforov.

Kodi mitu idzakhala yotani?

Kudyera masuku pamutu:

Tiyeni tiwone masinthidwe wamba a ma node ndi masango mumakhazikitsidwe osiyanasiyana opanga. Tidzakambirana momwe tingakulitsire magulu pamene kuchuluka kwa deta ndi katundu zikuwonjezeka komanso momwe mungasinthire ma node olephera omwe ali ndi zotsatira zochepa kwa makasitomala. Tiyeni kugawana ululu ndi systematize wotchuka angatenge. Tiyeni tiwone momwe tingayang'anire masango kuti timvetsetse pasadakhale kuti ndi chiyani chomwe sichikuyenda bwino. Tiyeni tikhudze zovuta zoyika mitundu yatsopano ya Cassandra.

Kachitidwe:

Tiyeni tiyese kumvetsetsa ma metric omwe tiyenera kuyang'ana ndi zomwe zingasinthidwe kuti ma metricwa akhale abwinoko. Tiyeni tiwone ngati tiphunzitsenso kapena ayi ndipo ngati ndi choncho, bwanji. Tizindikira zopinga pakupanga ndi kukhazikitsa kwa Cassandra ndikuyang'ana njira zina zaumisiri kuti tigwiritse ntchito mozungulira. Tiyeni tikhudze zowawa nthawi zonse kukonza ndi kuphatikizika popanda kuwonongeka kwa magwiridwe antchito.

Kulekerera zolakwika:

Zida zamakono sizikhala kwamuyaya, choncho ngozi zimachitika nthawi zonse, ndipo dzanja la mnzako likhoza kunjenjemera ndipo tidzachotsa zinthu zosafunika, kotero tidzakambirana za kuchira pambuyo pa kulephera kwa disks, makina kapena malo osungiramo deta, komanso kubwereranso kumalo osagwirizana. state kuchokera ku zosunga zobwezeretsera pakachitika zolakwika za opareta.

Lembetsani ndipo auzeni anzanu ndi anzanu za chochitikacho.

Source: www.habr.com