>>> list = ['c',[1,2,3]]
>>> tuple = ('c',(1,2,3))
>>> list[0]
'c'
>>> list[1]
[1, 2, 3]
>>> tuple[0]
'c'
>>> tuple[1]
(1, 2, 3)
>>> list[0] = 'q'
>>> list[0]
'q'
>>> list[1]
[1, 2, 3]
>>> tuple[0] = 'q'
Traceback (most recent call last):
File "", line 1, in
tuple[0] = 'q'
TypeError: 'tuple' object does not support item assignment
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Introduction One day, Cassandra stop listening for thrift client until restart it manually. After checking Cassandra log, found it enco...
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題目 每個伺服器支援不同的 TPM (transaction per minute) 當 request 來的時候, 系統需要馬上根據 TPM 的能力隨機找到一個適合的 server. 雖然稱為 "隨機", 但還是需要有 TPM 作為權重. 解法 別名演算法...
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