diff --git a/config/example.env b/config/example.env
index 9e61f4c03..2f03bd6f9 100644
--- a/config/example.env
+++ b/config/example.env
@@ -206,5 +206,5 @@ QF_ROUND_ESTIMATED_MATCHING_CACHE_DURATION=60000
 # OPTIONAL - default: Every 10 minutes
 PROJECT_CAMPAIGNS_CACHE_DURATION=600000
 
-# OPTIONAL - default: */10 * * * * * ( Every 10 minutes)
-PROJECT_CAMPAIGNS_CRONJOB_EXPRESSION=*/10 * * * * *
+# OPTIONAL - default: *0 */5 *  * * ( Every 5 minutes)
+PROJECT_CAMPAIGNS_CRONJOB_EXPRESSION=0 */5 * * *
diff --git a/config/test.env b/config/test.env
index 71fce3f69..5f1398a3b 100644
--- a/config/test.env
+++ b/config/test.env
@@ -179,5 +179,5 @@ QF_ROUND_ESTIMATED_MATCHING_CACHE_DURATION=1
 PROJECT_CAMPAIGNS_CACHE_DURATION=1
 
 
-# OPTIONAL - default: */10 * * * * * ( Every 10 minutes)
-PROJECT_CAMPAIGNS_CRONJOB_EXPRESSION=*/10 * * * * *
+# OPTIONAL - default: *0 */5 *  * * ( Every 5 minutes)
+PROJECT_CAMPAIGNS_CRONJOB_EXPRESSION=0 */5 * * *
diff --git a/src/services/campaignService.ts b/src/services/campaignService.ts
index d3c31707d..129e0a0cc 100644
--- a/src/services/campaignService.ts
+++ b/src/services/campaignService.ts
@@ -10,6 +10,7 @@ import { ProjectResolverWorker } from '../workers/projectsResolverWorker';
 import { QueryBuilder } from 'typeorm/query-builder/QueryBuilder';
 import { findAllActiveCampaigns } from '../repositories/campaignRepository';
 import { logger } from '../utils/logger';
+import { getRedisObject, setObjectInRedis } from '../redis';
 
 const projectFiltersCacheDuration =
   Number(process.env.PROJECT_FILTERS_THREADS_POOL_DURATION) || 60000;
@@ -41,13 +42,17 @@ const createFetchCampaignProjectsQuery = (
 
   return projectsQueryParams;
 };
-let projectCampaignCache: { [key: number]: string[] } = {};
+const PROJECT_CAMPAIGN_CACHE_REDIS_KEY =
+  'projectCampaignCache-for-projectBySlug';
 
-export const getAllProjectsRelatedToActiveCampaigns = (): {
+export const getAllProjectsRelatedToActiveCampaigns = async (): Promise<{
   [key: number]: string[];
-} => {
+}> => {
+  const projectCampaignCache = await getRedisObject(
+    PROJECT_CAMPAIGN_CACHE_REDIS_KEY,
+  );
   // It returns all project and campaigns( excluding manuallySelectedCampaign)
-  return projectCampaignCache;
+  return projectCampaignCache || {};
 };
 
 export const cacheProjectCampaigns = async (): Promise<void> => {
@@ -67,10 +72,15 @@ export const cacheProjectCampaigns = async (): Promise<void> => {
         : (newProjectCampaignCache[project.id] = [campaign.slug]);
     }
   }
-  projectCampaignCache = newProjectCampaignCache;
+  await setObjectInRedis({
+    key: PROJECT_CAMPAIGN_CACHE_REDIS_KEY,
+    value: newProjectCampaignCache,
+    // cronjob would fill it every 10 minutes so the expiration doesnt matter
+    expiration: 60 * 60 * 24 * 1, // 1 day
+  });
   logger.debug(
     'cacheProjectCampaigns() ended successfully, projectCampaignCache size ',
-    Object.keys(projectCampaignCache).length,
+    Object.keys(newProjectCampaignCache).length,
   );
 };
 
diff --git a/src/services/cronJobs/updateProjectCampaignsCacheJob.ts b/src/services/cronJobs/updateProjectCampaignsCacheJob.ts
index 3797278ab..b29b11cd6 100644
--- a/src/services/cronJobs/updateProjectCampaignsCacheJob.ts
+++ b/src/services/cronJobs/updateProjectCampaignsCacheJob.ts
@@ -8,7 +8,7 @@ import { CacheProjectCampaignsWorker } from '../../workers/cacheProjectCampaigns
 // every 10 minutes
 const cronJobTime =
   (config.get('CACHE_PROJECT_CAMPAIGNS_CRONJOB_EXPRESSION') as string) ||
-  '*/10 * * * *';
+  '0 */5 * * *';
 
 const projectsFiltersThreadPool: Pool<
   ModuleThread<CacheProjectCampaignsWorker>