feat: add default retry strategy for redis (#10880)

Fixes: FRMW-2861

.changeset/afraid-experts-walk.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/utils": patch
+---
+
+feat: add default retry strategy for redis

packages/core/utils/src/common/__tests__/define-config.spec.ts

@@ -142,6 +142,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)
@@ -298,6 +301,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)
@@ -462,6 +468,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)
@@ -627,6 +636,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)
@@ -780,6 +792,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)
@@ -933,6 +948,9 @@ describe("defineConfig", function () {
             },
             "storeCors": "http://localhost:8000",
           },
+          "redisOptions": {
+            "retryStrategy": [Function],
+          },
         },
       }
     `)

packages/core/utils/src/common/define-config.ts

@@ -74,7 +74,8 @@ type Config = Partial<
  * to override configuration as needed.
  */
 export function defineConfig(config: Config = {}): ConfigModule {
-  const { http, ...restOfProjectConfig } = config.projectConfig || {}
+  const { http, redisOptions, ...restOfProjectConfig } =
+    config.projectConfig || {}
 
   /**
    * The defaults to use for the project config. They are shallow merged
@@ -93,6 +94,23 @@ export function defineConfig(config: Config = {}): ConfigModule {
       },
       ...http,
     },
+    redisOptions: {
+      retryStrategy(retries) {
+        /**
+         * Exponentially increase delay with every retry
+         * attempt. Max to 4s
+         */
+        const delay = Math.min(Math.pow(2, retries) * 50, 4000)
+
+        /**
+         * Add a random jitter to not choke the server when multiple
+         * clients are retrying at the same time
+         */
+        const jitter = Math.floor(Math.random() * 200)
+        return delay + jitter
+      },
+      ...redisOptions,
+    },
     ...restOfProjectConfig,
   }