cassandra - best storage place for a temporary string? -

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our application generates short-lived string, dozen chars, supposed consumed our clients later once. after consumption gone. or becomes invalid in 10 minutes without consumption. storage of string needs global requests consuming string stateless.

we have been using global cache before storing string. works function-wise. however, not fit semantically. there have been incidents before when cache server down, our application cannot function correctly. searching alternatives global cache storing short temporary string. needs be

global fast write fast read fast delete supports timeout

update never concern. nosql sounds better place rdbms not totally sure. recommendations/suggestions/hints appreciated

for cassandra:

high availability - yes

global - yes

fast write - yes

fast read - yes

fast delete - yes, beware of creating tombstones. if looking global queue, anti-pattern in cassandra. if want each client latest string (i.e. overwrite last value on insert), you'd okay.

supports timeout - yes if talking data. cassandra can set ttl (time live) when data inserted. again, beware of creating tombstones.


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