LatestAutomationHow can I optimize the number of active workers in n8n queue mode to match my total vCPU availability?Calculate the optimal n8n worker concurrency by aligning the --concurrency flag with vCPU cores and managing the Node.js event loop to prevent CPU throttling.Journal
Hosting, servers and domains — written up as they actually behave.
29 articles
LatestAutomationHow can I optimize the number of active workers in n8n queue mode to match my total vCPU availability?Calculate the optimal n8n worker concurrency by aligning the --concurrency flag with vCPU cores and managing the Node.js event loop to prevent CPU throttling.
AutomationWhen Should You Migrate n8n from SQLite to PostgreSQL?Switch to PostgreSQL when your n8n execution history exceeds 5,000 rows or you encounter SQLITE_BUSY errors during concurrent workflow executions.
TechnologyHow Can I Identify VPS Noisy Neighbors via CPU Steal Time?Diagnose VPS performance lag by identifying CPU steal time metrics. Use top and vmstat to detect noisy neighbors and resource contention on the hypervisor.
Hosting BasicsHow Do I Update the NEN_ENCRYPTION_KEY During a Server Move?Updating the NEN_ENCRYPTION_KEY requires matching the source key on the target server to prevent credential decryption failures during an n8n migration.
AutomationDoes Migrating n8n from SQLite to PostgreSQL Require a Schema Export?Migrating n8n to PostgreSQL does not require a manual schema export because n8n creates tables automatically; however, data migration requires specific CLI tools or loaders.
AutomationHow Can I Fix EACCES Permission Errors in n8n Docker Containers?To fix EACCES errors in n8n docker containers, align the N8N_USER_ID and N8N_GROUP_ID environment variables with your host user's numeric ID to resolve volume permission conflicts.
AutomationWhy Are n8n Webhooks Returning 404 Errors With a Load Balancer?Fix 404 errors on n8n webhooks by verifying the WEBHOOK_URL environment variable and ensuring your load balancer correctly forwards the X-Forwarded-Proto header for SSL.
TechnologyDoes KVM virtualization provide more consistent disk I/O performance compared to OpenVZ or LXC containers?KVM provides superior disk I/O consistency by using dedicated block device emulation and independent guest-side scheduling, unlike the shared kernel queues in LXC or OpenVZ.
AutomationWhy Does High CPU Steal Time Increase Workflow Execution Latency?High CPU steal time occurs when the hypervisor denies cycles to your VPS, causing measurable jitter and latency in time-sensitive automation workflows and database tasks.
Hosting BasicsWhich Nginx Directives Fix n8n WebSocket Disconnections?Learn the mandatory Nginx configuration for n8n WebSockets, including proxy_http_version, header mapping, and timeout settings to prevent editor disconnections.