Redis ltrim - possible race condition? -


is there possible race condition redis' ltrim , rpush?

for instance, suppose redis list has these items: [1, 2, 3, 4, 5]

and call ltrim list 4 -1 should slice list [5]

but let's say: a millisecond after ltrim has started , before ltrim finished, thread pushing items list:

rpush list 6 rpush list 7

when both 2 rpushes, , ltrims finished, resulting list consist of [5, 6, 7]?

could possibly [5]? in other words, there possibility of race condition ltrim creating temporary list [5], , overwrites [5,6,7] [5] after 2 rpushes done?

short answer: no, because commands atomic.

honest answer: don't think because think operations atomic; however, website doesn't explicitly state atomic i'm 99.99999999% sure are.

logical answer: redis single-threaded, there no other threads preempt ltrim command. race condition occur in single threaded application have explicitly jump out of ltrim operation before it's done , start doing else, doesn't make sense.


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