September 2013
Intermediate to advanced
548 pages
12h 25m
English
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Chapter 19Storing Data with ETS and DETS
ets and dets are two system modules that
you can use for the efficient storage of large numbers of Erlang terms. ETS
is short for Erlang term storage, and DETS
is short for disk ETS.
ETS and DETS perform basically the same task: they provide large key-value lookup tables. ETS is memory resident, while DETS is disk resident. ETS is highly efficient—using ETS, you can store colossal amounts of data (if you have enough memory) and perform lookups in constant (or in some cases logarithmic) time. DETS provides almost the same interface as ETS but stores the tables on disk. Because DETS uses disk storage, it is far slower than ETS but will have a much smaller memory footprint when running. In addition, ETS ...
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