Client Overview
A large enterprise relying on legacy Informix databases was facing rising costs, limited scalability, and performance bottlenecks. Their infrastructure lacked high availability and modern failover capabilities, putting mission-critical operations at risk. They partnered with Simple Logic to migrate to a modern, open-source solution—PostgreSQL 14—with built-in resilience and performance optimization.
Challenges
- Legacy Lock-In: Informix was expensive and inflexible, limiting innovation.
- Downtime Risk: No automatic failover mechanism in place.
- Performance Bottlenecks: Server parameters were not tuned for workload demands.
- Migration Complexity: Large datasets and critical applications required zero data loss and minimal downtime.
Our Approach
Simple Logic executed a phased migration strategy focused on reliability, performance, and business continuity.
🔹 Step 1: Assessment & Planning
- Audited Informix schema, data types, and dependencies.
- Designed a migration roadmap with rollback and validation checkpoints.
🔹 Step 2: Data Migration
- Used custom ETL scripts and tools to transfer data securely.
- Validated data integrity using checksum and row-level comparisons.
🔹 Step 3: Automatic Failover Setup
- Deployed PostgreSQL streaming replication with pg_auto_failover.
- Configured health checks and monitoring for seamless failover.
- Achieved RTO < 1 minute and RPO = 0.
🔹 Step 4: Server Parameter Tuning
- Tuned PostgreSQL parameters including:
work_mem
shared_buffers
effective_cache_size
checkpoint_segments
- Reduced query latency by 40% and improved throughput by 60%.
Results
KPI | Before | After |
---|---|---|
Downtime Risk | High | Near Zero |
Query Latency | ~800ms | < 500ms |
Maintenance Cost | High | Reduced by 35% |
Scalability | Limited | Cloud-Ready & Elastic |
Client Impact
- Modernized Infrastructure: Transitioned to a scalable, open-source database.
- Improved Reliability: Automatic failover ensured business continuity.
- Enhanced Performance: Fine-tuned PostgreSQL delivered faster response times.
- Cost Efficiency: Reduced licensing and support costs.
📩 Let’s Talk
If your organization is planning to move away from legacy databases like Informix, Simple Logic can help you migrate with confidence.
👉 Contact Us for a free consultation.