System designLevel 3
Reliability and failover
Easynot started
Mediumnot started
Hardnot started
StatusFormatCompany style
Easy
Audit log writerDesignDesign25 minForecasts from a flaky weather providerDesignDesign25 minStatus page for a SaaS productDesignDesign25 minZero-downtime deploys for a small web appDesignDesign25 minUptime monitoring for small business websitesDesignDesign30 minMedium
Load balancing variable-cost requestsDesignDesign35 minSLO monitoring and error budgetDesign · Google styleGoogle styleDesignGoogle style35 minAlert evaluation engineDesignDesign30 minProduct page graceful dependency degradationDesign · Netflix styleNetflix styleDesignNetflix style40 minHighly available rate-limit aggregatorDesignDesign40 minMessaging gateway failover session resumeDesign · Meta styleMeta styleDesignMeta style40 minData lineage impact analysisDesign · Databricks styleDatabricks styleDesignDatabricks style35 minHard
Multi-region comment consistencyDesign · Meta styleMeta styleDesignMeta style45 minFlash sale load sheddingDesign · Amazon styleAmazon styleDesignAmazon style45 minDistributed tracing pipelineDesign · Google styleGoogle styleDesignGoogle style45 minMulti-tenant observability platformDesignDesign45 minTrace context propagationDesignDesign40 minMetric anomaly root cause localizationDesignDesign45 minEnd-to-end SLO with dependency attributionDesign · Google styleGoogle styleDesignGoogle style40 minObservability signal correlationDesignDesign45 minFeature pipeline quality gatesDesign · Databricks styleDatabricks styleDesignDatabricks style45 minMulti-region payment ledgerDesign · Stripe styleStripe styleDesignStripe style50 minLeader election for stream partitionsDesignDesign45 minDatabase failover RPO RTODesignDesign45 min