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🔧 feat: Alternative DNS Lookup for AWS ElastiCache TLS Connections (#9264)

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* added REDIS_USE_ALTERNATIVE_DNS_LOOKUP env variable to modify redis connection by adding dnsLookup
this is required when connecting to elasticache for ioredis
see "Special Note: Aws Elasticache Clusters with TLS" on this webpage:  https://www.npmjs.com/package/ioredis

* added REDIS_USE_ALTERNATIVE_DNS_LOOKUP env variable to modify redis connection by adding dnsLookup
this is required when connecting to elasticache for ioredis
see "Special Note: Aws Elasticache Clusters with TLS" on this webpage:  https://www.npmjs.com/package/ioredis

---------

Co-authored-by: Marc Amick <MarcAmick@jhu.edu>
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MarcAmick 2025-08-27 16:09:07 -04:00 • committed by GitHub
parent f209f616c9
commit ea3b671182
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3
api/cache/redisClients.js vendored
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@ -53,6 +53,9 @@ if (cacheConfig.USE_REDIS) {
: new IoRedis.Cluster(
urls.map((url) => ({ host: url.hostname, port: parseInt(url.port, 10) || 6379 })),
{
...(cacheConfig.REDIS_USE_ALTERNATIVE_DNS_LOOKUP
? { dnsLookup: (address, callback) => callback(null, address) }
: {}),
redisOptions,
clusterRetryStrategy: (times) => {
if (