# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/uc27fbq
業務高可用的保障:異地多活架構**
無論是高可用計算架構還是高可用存儲架構,它們的核心設計目標均是在部分服務器出現故障時確保系統能繼續運行。然而,在極端情況下,如機房斷電、火災、地震或洪水等,可能導致一個地點的所有服務器同時出現故障,使得整個業務系統癱瘓。即便依靠其他地區的備份系統,全面恢復業務的時間也可能較長,從半小時到 12 小時不等。備份系統由於平時不提供服務,可能存在許多未被發現的潛在問題。如果業務需求是在這種災難性故障發生 ⌘ Read more