# 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/qetf2ga
yue-fang-readfog-go
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Go1-21 中的 PGO 技術詳解**
2023 年初，Go 1.20 發佈了 PGO(Profile-guided optimization) 預覽版供用戶測試。在解決了預覽版中的已知限制，並通過社區反饋和貢獻進行了額外的改進後，Go 1.21 中的 PGO 支持已準備好用於生產！更多更詳細的內容可以參考 PGO 用戶指南（https://go.dev/doc/pgo）。下面我們將通過一個例子來展示 PGO 如何提高應用程序性能。在此 ⌘ Read more