Posted in Security Operations
Your monitoring dashboard is green. Your servers are online. But customers cannot complete payments. Is your…
samuel watua Soita — Full Stack Software Engineer
Your monitoring dashboard is green. Your servers are online. But customers cannot complete payments. Is your system available?
This is an important distinction in reliability engineering.
Infrastructure health is not necessarily business health.
A server can respond successfully while:
- Payment requests are timing out.
- Checkout latency is increasing.
- Database queries are becoming slower.
- Background jobs are falling behind.
- Order confirmations are not being delivered.
If you only monitor CPU, memory and server uptime, you might miss the failures customers actually experience.
This is where Service Level Indicators (SLIs) and Service Level Objectives (SLOs) become valuable.
For example, a payment service could monitor:
Availability: What percentage of eligible payment requests receive a valid system response?
Latency: How long does it take to process payment requests?
Correctness: Are transactions reaching the expected final states?
Freshness: How long are unresolved payment records waiting for reconciliation?
An SLO defines the reliability target. An error budget helps teams understand how much unreliability they can tolerate before prioritizing stability over new changes.
The objective is not to make every service perfect.
It is to measure reliability in a way that reflects what users actually experience.
If your application is online but customers cannot complete its most important business operation, would you still call it 99.9% available?
#SRE #SiteReliabilityEngineering #BackendEngineering #Observability #SystemDesign #CloudEngineering #DevOps #Monitoring #Fintech #SoftwareArchitecture #ProductionSystems #EngineeringLeadership
2 reactions · 0 comments
Topics: #fintech, #monitoring, #sre, #engineeringleadership, #backendengineering, #devops, #sitereliabilityengineering, #cloudengineering, #productionsystems, #softwarearchitecture