phemcache
A configurable ephemeral in-memory cache
Installation
npm
npm install phemcache
yarn
yarn add phemcache
Example
import PhemCache from 'phemcache'
const cache = PhemCache({
ttlMs: 1000,
resetOnSet: true,
resetOnGet: true,
beforeClear(key, value) {
console.log(`global before clear ${key} ${value}`);
// return false prevent the key from being cleared and restarting the ttl timer
return Math.random() > 0.75;
},
afterClear(key, value) {
console.log(`global after clear ${key} ${value}`);
},
});
cache.set('key1', 1);
// override some global options for key2
cache.set('key2', 2, {
resetOnSet: false,
});
// override all global options for key3
cache.set('key3', 3, {
ttlMs: 500,
resetOnGet: false,
resetOnSet: false,
beforeClear(key, value) {
console.log(`overridden before clear ${key} ${value}`);
return Math.random() > 0.5;
},
afterClear(key, value) {
console.log(`overridden after clear ${key} ${value}`);
},
});
// void or undefined return results in the key being cleared
cache.set('key4', 4, {
beforeClear(key, value) {
console.log(`before clear ${key} ${value}`);
},
});
Notes
beforeClear
does not support asynchronous operations