put
Write key-value pairs to cache
Description
Examples
Write Series of Key-Value Pairs to Cache
Start a persistence service that uses Redis™ as the persistence provider. The service requires a connection name and an open port. Once the service is running, you can connect to the service using the connection name and create a cache.
ctrl = mps.cache.control('myRedisConnection','Redis','Port',4519); start(ctrl) c = mps.cache.connect('myCache', 'Connection', 'myRedisConnection');
Add keys and values to the cache and display them as a MATLAB table.
put(c,'keyOne',10,'keyTwo',20,'keyThree',30,'keyFour',[400 500],'keyFive',magic(5)) tt = table(keys(c), get(c,keys(c))','VariableNames',{'Keys','Values'})
tt = 5×2 table Keys Values __________ ____________ 'keyFive' [5×5 double] 'keyFour' [1×2 double] 'keyOne' [ 10] 'keyThree' [ 30] 'keyTwo' [ 20]
Write Set of Keys and Corresponding Values to Cache
Start a persistence service that uses Redis as the persistence provider. The service requires a connection name and an open port. Once the service is running, you can connect to the service using the connection name and create a cache.
ctrl = mps.cache.control('myRedisConnection','Redis','Port',4519); start(ctrl) c = mps.cache.connect('myCache', 'Connection', 'myRedisConnection');
Add a set of keys and corresponding values to the cache and display them as a MATLAB table.
keySet = {'keyOne','keyTwo','keyThree','keyFour','keyFive'} valueSet = {10, 20, 30, [400 500], magic(5)} put(d,keySet,valueSet) tt = table(keys(c), get(c,keys(c))','VariableNames',{'Keys','Values'})
tt = 5×2 table Keys Values __________ ____________ 'keyFive' [5×5 double] 'keyFour' [1×2 double] 'keyOne' [ 10] 'keyThree' [ 30] 'keyTwo' [ 20]
Write Object to Cache
Create a class whose object you want to write to the Redis cache.
classdef BasicClass properties Value = pi; end methods function r = roundOff(obj) r = round([obj.Value],2); end function r = multiplyBy(obj,n) r = [obj.Value] * n; end end end
Create an object of the class and assign a value to the Value
property,
a = BasicClass a.Value = 4
Start a persistence service that uses Redis as the persistence provider. The service requires a connection name and an open port. Once the service is running, you can connect to the service using the connection name and create a cache.
ctrl = mps.cache.control('myRedisConnection','Redis','Port',4519); start(ctrl) c = mps.cache.connect('myCache', 'Connection', 'myRedisConnection');
Add a key and the object that you created to the cache and retrieve the object.
put(c,'objKey',a) objVal = get(c,'objKey')
objVal = BasicClass with properties: Value: 4
The output shows that there is no loss of information during writing an object to the cache and retrieving the object from the cache. The retrieved object contains the same information as the input object.
Input Arguments
c
— Data cache
persistence provider specific data cache object
A data cache represented by a persistence provider specific data cache object.
Currently, Redis and MATLAB are the only supported persistence providers. Therefore, the cache objects will be
of type mps.cache.RedisCache
or
mps.cache.MATFileCache
.
Example: c
key
— Key
character vector
Key to add, specified as a character vector.
Example: 'keyFour'
value
— Value
array
Value, specified as an array. value
can be any valid
MATLAB data type, including MATLAB objects.
Example: [400, 500]
keySet
— Keys
cell array of character vectors
Keys, specified as a cell array of character vectors.
Example: {'keyOne','keyTwo','keyThree','keyFour','keyFive'}
valueSet
— Values
cell array
Values, specified as comma-separated cell array. Each value may be any valid MATLAB data type, including MATLAB objects.
Example: {10, 20, 30, [400 500], magic(5)}
Version History
Introduced in R2018b
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