Silently ignore if connection is not available #761
Description
I am using ioredis with type-cacheable on AWS lambdas, and from time to time, the connection to Redis will time out.
Some of my APIs are time-sensitive, and if the connection to Redis fails - I wanna skip the cache and proceed to DynamoDB as soon as possible.
Here's how Redis client configuration:
const REDIS_CONNECTION_RETRY_COUNT: number = 1;
const redisOptions: RedisOptions = {
host: config.redis.host || 'localhost',
port: config.redis.port || 6379,
retryStrategy: (times): number | undefined => {
// reconnect after
if (times > REDIS_CONNECTION_RETRY_COUNT) {
return undefined;
}
return 50;
},
showFriendlyErrorStack: true,
keepAlive: 10000,
connectTimeout: 1500,
maxRetriesPerRequest: REDIS_CONNECTION_RETRY_COUNT,
noDelay: true,
lazyConnect: false,
};
As you can see, I give 1.5 seconds for connection and retry once, and if that fails - I wanna move on.
I also don't want my logs to indicate errors, so I simply log them as info
redisClient.on('error', (err) => {
if (err?.code === 'ETIMEDOUT') {
logger.info('Redis connection timed out, retrying...');
} else {
logger.error(err);
}
// redisClient.disconnect(false);
});
Which all works great, except, inside ioredis-adapter, if the connection is not open by the time it tries to perform get - it will throw an error
(node:2991) UnhandledPromiseRejectionWarning: Error: Connection is closed.
at IoRedisAdapter.<anonymous> (/Users/user/Dev/projects/events-streaming/node_modules/@type-cacheable/ioredis-adapter/dist/index.js:42:51)
at Generator.next (<anonymous>)
at /Users/user/Dev/projects/events-streaming/node_modules/@type-cacheable/ioredis-adapter/dist/index.js:8:71
Is there a way to catch this error or tell the adapter to skip if the connection is not there?
Thank you