# 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/nqxo7xq
使用 expvar 暴露 Go 程序運行指標**
獲取應用程序的運行指標,可以讓我們更好地瞭解它的實際狀況。將這些指標對接到 prometheus、zabbix 等監控系統,能夠對應用程序持續檢測,發現異常可以及時告警並得到處理。Pull 與 Push-----------與監控系統對接方式有兩種,一種是 Pull(拉取),另外一種 Push(推送)。以 Prometheus 爲例,應用程序通過暴露出 HTTP 接口,讓 Prometheus 週 ⌘ Read more