# 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/3qzb4vq
yue-fang-readfog-go
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sync-Cond 設計與實現**
概述--sync.Cond 實現了一種條件變量同步原語，可以讓一個 goroutine 集合在滿足特定條件時被喚醒。sync.Cond 典型的使用場景是 生產-消費者模式，多個 goroutine 等待某個事件發生， 單個 goroutine 通知某個事件已發生。比如電商中的用戶下單事件發生時，會通知到訂單、用戶、積分、優惠券、倉儲等服務，如果是單個生產者對單個消費者，直接使用 互斥鎖 或 cha ⌘ Read more