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Feng Yang
3 months ago
Load balancer configuration matters! Switched to least connections algorithm and improved response times. Was using round-robin but some backend instances were getting overwhelmed. Added health checks with proper thresholds. Also implemented connection draining for graceful deployments. #nginx #loadbalancing #cloud #performance
Feng Yang
2 months ago
Terraform tip: Always use modules for reusable infrastructure. Our deployment time dropped by 60%! Created modules for common patterns - VPC, EKS cluster, RDS. New environments can be spun up in 15 minutes instead of days. State management with S3 backend and DynamoDB locking is rock solid. #terraform #iac #devops #automation
Feng Yang
3 months ago
Load balancer configuration matters! Switched to least connections algorithm and improved response times. Was using round-robin but some backend instances were getting overwhelmed. Added health checks with proper thresholds. Also implemented connection draining for graceful deployments. #nginx #loadbalancing #cloud #performance
Feng Yang
2 months ago
Ansible playbooks for configuration management. Consistent servers across all environments! Idempotent tasks mean running playbooks multiple times is safe. Vault handles secrets encryption. Integrated with our CI/CD for automatic configuration drift detection. Infrastructure as code all the way down! #ansible #automation #devops #configmanagement
Feng Yang
19 days ago
S3 lifecycle policies saved us $500/month by moving old data to Glacier automatically. Set up intelligent tiering for unpredictable access patterns. Implemented S3 Inventory to audit our storage. The cost explorer showed immediate impact. Sometimes the biggest wins are in housekeeping! #aws #s3 #costsaving #storage
Feng Yang
1 month ago
Implemented blue-green deployment. Zero-downtime releases are now our standard! AWS CodeDeploy handles the traffic shifting automatically. Rollbacks happen in seconds if health checks fail. The team deploys with confidence now - even on Fridays. Well, maybe not Fridays. #deployment #devops #cloud #zerodowntime
Feng Yang
3 months ago
Kubernetes cluster is finally production-ready. Auto-scaling handles traffic spikes beautifully! Set up HPA based on custom metrics from our application. During Black Friday, the cluster scaled from 10 to 45 pods seamlessly. Zero downtime despite 10x normal traffic. Worth every hour of setup! #kubernetes #k8s #devops #autoscaling
Feng Yang
1 month ago
Monitoring stack complete: Prometheus + Grafana + AlertManager. No more surprises in production! Created custom dashboards for each service. Alert fatigue was real at first - tuned thresholds over 2 weeks. Now we get meaningful alerts that actually require action. On-call life improved dramatically! #monitoring #prometheus #grafana #observability
Feng Yang
2 months ago
AWS Lambda cold starts were killing our API. Provisioned concurrency fixed it! Went from 2-3 second cold starts to consistent 200ms responses. The cost increase was minimal compared to user experience improvement. Also optimized our function packages - smaller bundles = faster starts. #serverless #lambda #aws #performance
Feng Yang
3 months ago
Load balancer configuration matters! Switched to least connections algorithm and improved response times. Was using round-robin but some backend instances were getting overwhelmed. Added health checks with proper thresholds. Also implemented connection draining for graceful deployments. #nginx #loadbalancing #cloud #performance
Feng Yang
1 month ago
Terraform tip: Always use modules for reusable infrastructure. Our deployment time dropped by 60%! Created modules for common patterns - VPC, EKS cluster, RDS. New environments can be spun up in 15 minutes instead of days. State management with S3 backend and DynamoDB locking is rock solid. #terraform #iac #devops #automation
Feng Yang
3 months ago
Kubernetes cluster is finally production-ready. Auto-scaling handles traffic spikes beautifully! Set up HPA based on custom metrics from our application. During Black Friday, the cluster scaled from 10 to 45 pods seamlessly. Zero downtime despite 10x normal traffic. Worth every hour of setup! #kubernetes #k8s #devops #autoscaling
Feng Yang
2 months ago
Implemented GitOps with ArgoCD. Infrastructure changes are now version-controlled and auditable! Every change goes through PR review. Rollbacks are just git reverts. The sync status dashboard gives us confidence that production matches our repo. Compliance team loves the audit trail! #gitops #argocd #kubernetes #devops
Feng Yang
1 month ago
Monitoring stack complete: Prometheus + Grafana + AlertManager. No more surprises in production! Created custom dashboards for each service. Alert fatigue was real at first - tuned thresholds over 2 weeks. Now we get meaningful alerts that actually require action. On-call life improved dramatically! #monitoring #prometheus #grafana #observability
Feng Yang
2 months ago
Load balancer configuration matters! Switched to least connections algorithm and improved response times. Was using round-robin but some backend instances were getting overwhelmed. Added health checks with proper thresholds. Also implemented connection draining for graceful deployments. #nginx #loadbalancing #cloud #performance
Feng Yang
3 months ago
Implemented blue-green deployment. Zero-downtime releases are now our standard! AWS CodeDeploy handles the traffic shifting automatically. Rollbacks happen in seconds if health checks fail. The team deploys with confidence now - even on Fridays. Well, maybe not Fridays. #deployment #devops #cloud #zerodowntime
Feng Yang
3 months ago
Disaster recovery drill successful! RTO of 15 minutes achieved with our backup strategy. Tested full region failover on AWS. Route53 health checks trigger automatic DNS failover. Cross-region RDS replicas were the key. Documented everything and trained the team. Sleep better knowing we're prepared! #disasterrecovery #cloud #backup #businesscontinuity
Feng Yang
1 month ago
Auto-scaling based on custom metrics. CPU usage alone wasn't enough for our workload! Implemented scaling based on queue depth and request latency. Predictive scaling for known traffic patterns (like daily peaks). The cluster now responds to actual business metrics. Right-sizing finally achieved! #autoscaling #cloud #aws #optimization
Feng Yang
2 months ago
Disaster recovery drill successful! RTO of 15 minutes achieved with our backup strategy. Tested full region failover on AWS. Route53 health checks trigger automatic DNS failover. Cross-region RDS replicas were the key. Documented everything and trained the team. Sleep better knowing we're prepared! #disasterrecovery #cloud #backup #businesscontinuity
Feng Yang
1 month ago
Disaster recovery drill successful! RTO of 15 minutes achieved with our backup strategy. Tested full region failover on AWS. Route53 health checks trigger automatic DNS failover. Cross-region RDS replicas were the key. Documented everything and trained the team. Sleep better knowing we're prepared! #disasterrecovery #cloud #backup #businesscontinuity
Feng Yang
3 months ago
Monitoring stack complete: Prometheus + Grafana + AlertManager. No more surprises in production! Created custom dashboards for each service. Alert fatigue was real at first - tuned thresholds over 2 weeks. Now we get meaningful alerts that actually require action. On-call life improved dramatically! #monitoring #prometheus #grafana #observability
Feng Yang
20 days ago
Just migrated our entire infrastructure to AWS. The cost savings with reserved instances are incredible! Went from $15k/month to $8k/month by right-sizing instances and using Savings Plans. The migration took 3 months but the ROI was achieved in just 6 months. Planning and tagging were crucial! #aws #cloud #infrastructure #costoptimization
Feng Yang
2 months ago
Auto-scaling based on custom metrics. CPU usage alone wasn't enough for our workload! Implemented scaling based on queue depth and request latency. Predictive scaling for known traffic patterns (like daily peaks). The cluster now responds to actual business metrics. Right-sizing finally achieved! #autoscaling #cloud #aws #optimization
Feng Yang
2 months ago
Redis cluster for session management. 10x faster than database-backed sessions! Set up Redis Sentinel for high availability. Memory optimization with appropriate eviction policies was key. Also using Redis for rate limiting and caching. The versatility of Redis never ceases to amaze me! #redis #caching #cloud #performance
Feng Yang
27 days ago
Azure DevOps pipelines are surprisingly powerful. Parallel jobs cut our build time in half! Set up a matrix strategy for testing across environments. Artifact caching reduced redundant work. The integration with Azure resources is seamless. Template reuse across projects saves so much time! #azure #cicd #devops #automation
Feng Yang
2 months ago
Kubernetes cluster is finally production-ready. Auto-scaling handles traffic spikes beautifully! Set up HPA based on custom metrics from our application. During Black Friday, the cluster scaled from 10 to 45 pods seamlessly. Zero downtime despite 10x normal traffic. Worth every hour of setup! #kubernetes #k8s #devops #autoscaling