# 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/zyt3q2q
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linux 的 5 種 IO 模型**
一、這裏 IO 是什麼  操作系統爲了保護自己，設計了用戶態、內核態兩個狀態。應用程序一般工作在用戶態，當調用一些底層操作的時候（比如 IO 操作），就需要切換到內核態纔可以進行服務器從網絡接收的大致流程如下： 1、數據通過計算機網絡來到了網卡2、把網卡的數據讀取到 socket 緩衝區3、把 socket 緩衝區讀取到用戶緩衝區，之後應用程序就可以使用核心就是兩次讀取操作，五大 IO 模型的 ⌘ Read more