@restorecommerce/chassis-srv/lib/cache/index.js

Restore Commerce microservice chassis

import { isNullish } from 'remeda';
import { createCache } from 'cache-manager';
import Keyv from 'keyv';
import { LRUCache } from 'lru-cache';
/**
 * A key, value map containing cache providers.
 * Cache providers are registered with the register function.
 */
const providers = {};
/**
 * Register a cache provider.
 * Providers need to be compatible to the node-cache-manager module.
 * https://github.com/BryanDonovan/node-cache-manager
 * @param  {string} name     cache provider identifier
 * @param  {constructor} provider cache store constructor
 */
export const register = (name, provider) => {
    providers[name] = provider;
};
// register defaults
// add memory provider by default, since it is included with the cache-manager.
register('memory', (config, logger) => {
    const options = {
        max: config?.max || 500,
        dispose: config?.dispose,
        allowStale: config?.allowStale,
        ttl: config?.ttl || 5000,
    };
    const lruCache = new LRUCache(options);
    const keyv = new Keyv({ store: lruCache });
    const cache = createCache({ stores: [keyv] });
    return cache;
});
/**
 * Get a new cache instance.
 * @param {Object} config Cache configuration
 * @param [Logger] logger
 * @return Cache instance
 */
export const get = (config, logger) => {
    if (isNullish(config)) {
        throw new Error('missing argument config');
    }
    const providerName = config[0].provider;
    const provider = providers[providerName];
    const cache = provider(config, logger);
    return cache;
};
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