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how the sync process between 2 front servers will happen after prod deployment

"Each production environment has at least 2 front end servers, allowing deploy to production with zero downtime. One by one the front-end servers are updated. There is always at least one running." 

for the above is there anywhere I will get supporting document,

after deployment how the sync between 2 servers will happen, while syncing is there any impact to users who are using application.

how that we are achieving zero downtime.

2026-03-12 06-20-48
KUNDAN CHAUHAN
Champion

Hi @Priya Naveen,

After deployment, synchronization between servers happens automatically through the Deployment Manager, which ensures that both the application code and database are updated across all servers. 

For user Impact: The server being updated may cause temporary unavailability for users, but this usually lasts only a few seconds or minutes.

Deploying apps

Thanks

Kundan Chauhan


2021-11-12 04-59-31
Manikandan Sambasivam

Hi,

After deployment, the platform synchronizes application assets and configurations across all front-end servers, Users accessing a server might experience some delay.

2024-06-03 11-04-24
Priya Naveen

Hello @Manikandan Sambasivam , thanks for your response,

Delay is fine, like after deployment the first user accessing the application will face some delay, thats totally fine.


but what about a transaction, like creating a claim on application, while we are deploying the application, whether user face any error and transaction will be reverted.

or it will be successful.

how the 2 servers work here?

do load balancer anything involved here?  

are we really achieving zero down time? if yes where can we get supporting documentation for that

 

2021-11-12 04-59-31
Manikandan Sambasivam

Please check this link https://success.outsystems.com/documentation/11/deploying_apps/selective_deployment_using_deployment_zones/

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