# 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/t5m5x7q
增強數據可用性一定要複製多份嗎?**
對象存儲(如 S3)中常用的一種提高耐用性的技術叫做糾刪碼(Erasure Coding),可以提高數據耐久性並減少存儲開銷。即使發生硬件故障,也能保證數據的可用性和完整性。讓我們來看看它是如何工作的。糾刪碼處理數據持久性的方式與複製不同。它將數據分割成小塊(放在不同的服務器上),並創建奇偶校驗以實現冗餘。發生故障時,我們可以使用分塊數據和奇偶校驗來重建數據。讓我們來看一個具體的例子(4 + 2 ⌘ Read more