# 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/i2e4vlq
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Go 通過 ETCD 實現應用選主**
原理Go 服務通過 ETCD client 實現有狀態服務的選主，A、B 兩個服務通過生成相同前綴的 key，並且把自己的 IP 值上傳給 ETCD，由於多個服務間會同時上傳，所以按照相同前綴去獲取創建的 key-value，然後通過時間進行排序，最早創建的則成爲 master。如果成爲 master 的服務一直在線的話，會對 key-value 進行 續約， 當 master 下線不能正常續約的 ⌘ Read more