import ballerina/cache;
import ballerina/io;
public function main() returns error? {
// This creates a new cache instance with the default configurations.
cache:Cache cache = new();
// Adds new entries to the cache.
check cache.put("key1", "value1");
check cache.put("key2", "value2");
// Checks for the cached key availability.
if (cache.hasKey("key1")) {
// Fetches the cached value.
string value = <string> check cache.get("key1");
io:println("The value of the key1: " + value);
}
// Gets the keys of the cache entries.
string[] keys = cache.keys();
io:println("The existing keys in the cache: " + keys.toString());
// Gets the size of the cache.
int size = cache.size();
io:println("The cache size: ", size);
}
Cache basicsThe Ballerina Cache API provides an in-memory cache implementation by default with a
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import ballerina/cache;
import ballerina/io;
public function main() returns error? {
cache:Cache cache = new();
This creates a new cache instance with the default configurations.
check cache.put("key1", "value1");
check cache.put("key2", "value2");
Adds new entries to the cache.
if (cache.hasKey("key1")) {
Checks for the cached key availability.
string value = <string> check cache.get("key1");
io:println("The value of the key1: " + value);
}
Fetches the cached value.
string[] keys = cache.keys();
io:println("The existing keys in the cache: " + keys.toString());
Gets the keys of the cache entries.
int size = cache.size();
io:println("The cache size: ", size);
}
Gets the size of the cache.
bal run cache_basic.bal
The value of the key1: value1
The existing keys in the cache: ["key1","key2"]
The cache size: 2