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Memcached Edition Command Compatibility

Last updated: 2024-09-25 17:12:07
The Memcached edition instance supports the following commands compatible with the Memcached protocol: set, add, replace, append, prepend, cas, get, bget, gets, get_ext, gets_ext, delete, incr, and decr.
Command
Compatible Version
Description
set
Memcached Protocol 1.6
Sets a key-value pair. If the key does not exist, it will create the key; if it exists, it will overwrite the old value.
add
Adds a key-value pair to the cache, but only if the key does not exist. If the key already exists, the command does nothing.
replace
Replaces a key-value pair in the cache, but only if the key already exists. If the key does not exist, the command does nothing.
append
Appends data to the end of the existing value of a key. If the key does not exist, the command does nothing.
prepend
Adds data to the beginning of the existing value of a key. If the key does not exist, the command does nothing.
cas
Compare and swap. The command first checks if the current value of the key matches the provided value; if it matches, the key is updated with the new value.
get
Retrieves the value of one or more keys from the cache. If the key is not found, an error is returned.
bget
Bulk get. This binary protocol command retrieves the values of multiple keys from the cache.
gets
Similar to get, it retrieves the value of a key from the cache and returns a version number.
get_ext
An extended binary protocol command that allows clients to specify additional options to control the data retrieval process.
gets_ext
An extended command with a version number that allows clients to retrieve both the value of a key and its version number, enabling subsequent atomic operations.
delete
Deletes a key-value pair from the cache. If the key does not exist, the command does nothing.
incr
Increases the value of a key by a specified integer. If the key does not exist, an initial value can be provided. If the key's value is not an integer, the operation fails.
decr
Decreases the value of a key by a specified integer.
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