# 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/w2cbp4a
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Go 設計模式之責任鏈模式**
其實很多人不知道，責任鏈模式是我們工作中經常遇到的模式，特別是 web 後端工程師，我們工作中每時每刻都在用：因爲市面上大部分的 web 框架的過濾器基本都是基於這個設計模式爲基本模式搭建的。模式介紹-------我們先來看一下責任鏈模式（Chain Of Responsibility Design Pattern ）的英文介紹：Avoid coupling the sender of a req ⌘ Read more