diff --git a/src/webhooks/webhook.dispatcher.ts b/src/webhooks/webhook.dispatcher.ts
index 2c49833..83cb0cf 100644
--- a/src/webhooks/webhook.dispatcher.ts
+++ b/src/webhooks/webhook.dispatcher.ts
@@ -1,6 +1,6 @@
-
 import crypto from 'crypto';
-import { WebhookConfig, WebhookPayload } from './webhook.types.js';
+import { WebhookConfig, WebhookPayload, DeadLetterEntry, WebhookDeliveryStatus } from './webhook.types.js';
+import { WebhookStore } from './webhook.store.js';
 import { logger } from '../logger.js';
 
 const MAX_RETRIES = 5;
@@ -12,6 +12,16 @@ function sleep(ms: number): Promise<void> {
     return new Promise((resolve) => setTimeout(resolve, ms));
 }
 
+// Calculate exponential backoff with jitter to avoid thundering herd
+function calculateBackoff(attempt: number): number {
+    const exponentialDelay = BASE_DELAY_MS * Math.pow(2, attempt);
+    // Add jitter: random value between 0-25% of the exponential delay
+    const jitter = Math.random() * 0.25 * exponentialDelay;
+    const delayWithJitter = exponentialDelay + jitter;
+    // Cap at maximum delay
+    return Math.min(delayWithJitter, MAX_DELAY_MS);
+}
+
 function signPayload(secret: string, body: string): string {
     return crypto.createHmac('sha256', secret).update(body).digest('hex');
 }
diff --git a/src/webhooks/webhook.store.ts b/src/webhooks/webhook.store.ts
index 5cbcde6..dc052cc 100644
--- a/src/webhooks/webhook.store.ts
+++ b/src/webhooks/webhook.store.ts
@@ -1,6 +1,7 @@
-import { WebhookConfig, WebhookEventType } from './webhook.types.js';
+import { WebhookConfig, WebhookEventType, DeadLetterEntry } from './webhook.types.js';
 
 const store = new Map<string, WebhookConfig>();
+const deadLetterStore = new Map<string, DeadLetterEntry>();
 
 export const WebhookStore = {
     register(config: WebhookConfig): void {
@@ -27,4 +28,4 @@ export const WebhookStore = {
     clear(): void {
         store.clear();
     },
-};
\ No newline at end of file
+};