Optional expiration time, either relative number of seconds
from current time (up to 1 month), or an absolute Unix epoch time.
By default, items never expire, though items may be evicted due to
memory pressure. Float values will be rounded up to the nearest
whole second.
key_prefix
Prefix for to prepend to all keys.
min_compress_len
Unimplemented compatibility option.
namespace
a string specifying an optional namespace to use in
the request.
Returns
A list of keys whose values were NOT set because they already
exist in memcache. On total success, this list should be empty.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-11-14 UTC."],[[["The `add_multi` function sets multiple key-value pairs in memcache if and only if the keys do not already exist."],["It takes a dictionary (`mapping`) where keys are the keys to set and values are the associated values."],["You can specify an optional expiration time (`time`) for the keys, which can be either a relative time in seconds or an absolute Unix epoch time."],["A `key_prefix` can be prepended to all keys and a `namespace` can be used to scope the keys."],["The function returns a list of keys that were not set because they already had values in memcache."]]],[]]
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