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Post #156 845

Forwarded from Bobosher Musurmonov

Bu yerda bir narsani aytish esimdan chiqibdi.
Master nodega yangi record yozilganda followes nodelarni kutib o'tirmasdan, ishida davom etishini yozdim. Bu asinxron yozish usuli. Lekin bundan boshqa usullari ham bor.

Sinxron usulda yozilganda client follower slavelar yozib bo'lgunicha bloklanib turadi. Bu asosan, data consistencyni ta'minlash uchun. Yana boshqa sabablar ham bor.
Sinxron yozishni ham turlicha configure qilsa bo'ladi.
Masalan, ixtiyoriy 1 ta, 2 ta n ta replica yozib bo'lishi bilan blokni ochish, aynan a, b replicalar yozib bo'lgandan keyin bo'shatish va h.k.

Writelarni scale qilish uchun multi-master replication bor. Lekin rostini aytsam, bu implement qilish uchun biroz qiyin va conflictlar kelib chiqishi ehtimoli ancha yuqori.
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