With an Active-Standby redundant configuration,
when the primary server fails, it automatically switches to the standby server
and keeps running without service interruption.
With only one server, a failure takes down the entire service
After a failure, setting up a new server can take several hours
Each hour of service outage causes revenue losses of millions to tens of millions of KRW
Active and Standby servers run simultaneously to eliminate the single point of failure
When a primary server failure is detected, it automatically switches to the standby server within seconds
Real-time data replication means no data loss even during Failover
A redundant configuration provides non-stop service even during failures
Handles live service
Real-time data synchronization
Immediate switchover on failure
Real-time data replication
Status monitoring at 1-second intervals
Automatic switchover within 30 seconds
Data preserved through real-time replication
Maintenance without service interruption
| HA configuration | Active-Standby (A-S) / Active-Active (A-A) |
|---|---|
| Failover time | Automatic switchover within 30 seconds |
| Data synchronization | DRBD, MySQL Replication, Redis Sentinel, etc. |
| Health check | Heartbeat monitoring at 1-second intervals |
| Availability SLA | 99.99% (52 minutes or less of downtime per year) |
| VIP (Virtual IP) | Non-stop switchover with Floating IP |
| Supported environments | Web servers, DB servers, application servers |
Choose the HA configuration that fits your service
Service analysis and HA requirements gathering
Optimal HA configuration design
Build the redundant environment
Go live after failure scenario testing
Payments/transactions must never stop
Prevent order/payment outages
Patient data continuity
Prevent user churn
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