PostgreSQL sequential scan: when it is correct and when it hurts
PostgreSQL sequential scan: when it is correct and when it hurts. A practical production guide with diagnostic commands, failure interpretation, and a safe…
A practical Postgres slow-query investigation
A practical Postgres slow-query investigation. A practical, safe workflow with diagnostic commands, interpretation, common traps, and a repeatable…
PostgreSQL SSL connection failures: certificate, mode, and hostname
PostgreSQL SSL connection failures: certificate, mode, and hostname. A practical production guide with diagnostic commands, failure interpretation, and a…
PostgreSQL statement_timeout: safety net without random failures
PostgreSQL statement_timeout: safety net without random failures. A practical production guide with diagnostic commands, failure interpretation, and a safe…
PostgreSQL table bloat: confirm it before rewriting data
PostgreSQL table bloat: confirm it before rewriting data. A practical production guide with diagnostic commands, failure interpretation, and a safe…
PostgreSQL temporary files filling disk
PostgreSQL temporary files filling disk. A practical production guide with diagnostic commands, failure interpretation, and a safe decision sequence.
Postgres too many connections: stop raising max_connections
Postgres too many connections: stop raising max_connections. A practical, safe workflow with diagnostic commands, interpretation, common traps, and a…
VACUUM FULL in production: lock and disk-space risks
VACUUM FULL in production: lock and disk-space risks. A practical production guide with diagnostic commands, failure interpretation, and a safe decision…
PostgreSQL pg_wal is growing: find the retention reason
PostgreSQL pg_wal is growing: find the retention reason. A practical production guide with diagnostic commands, failure interpretation, and a safe decision…
Prometheus high cardinality: labels that explode cost
Prometheus high cardinality: labels that explode cost. A practical production guide with diagnostic commands, failure interpretation, and a safe decision…
Prometheus target down: scrape path, network, or authentication?
Prometheus target down: scrape path, network, or authentication?. A practical production guide with diagnostic commands, failure interpretation, and a safe…
PROXY protocol mismatch: binary headers hitting an ordinary server
PROXY protocol mismatch: binary headers hitting an ordinary server. A practical production guide with diagnostic commands, failure interpretation, and a…
Railway backups are not a complete disaster-recovery plan
Railway can deploy open-source software quickly, but its runtime and storage model create tradeoffs. Here is where the friction appears and when a VPS is…
Railway volumes for open source apps: convenient until replicas matter
Railway volumes simplify persistent storage for one service, but replicas and attachment boundaries change scaling, failover, and recovery decisions.
Ransomware-resistant backups: immutability and separate authority
Ransomware-resistant backups: immutability and separate authority. A practical production guide with diagnostic commands, failure interpretation, and a…
Disaster recovery dependency mapping: what must return first?
Disaster recovery dependency mapping: what must return first?. A practical production guide with diagnostic commands, failure interpretation, and a safe…
RPO vs RTO: turn backup promises into engineering requirements
RPO vs RTO: turn backup promises into engineering requirements. A practical production guide with diagnostic commands, failure interpretation, and a safe…
Redis RDB vs AOF: persistence is not an external backup
Redis RDB vs AOF: persistence is not an external backup. A practical production guide with diagnostic commands, failure interpretation, and a safe decision…
Redis maxmemory reached: eviction, leaks, and dangerous fixes
Redis maxmemory reached: eviction, leaks, and dangerous fixes. A practical, safe workflow with diagnostic commands, interpretation, common traps, and a…
Deployment failed because the server ran out of disk
Deployment failed because the server ran out of disk. A practical production guide with diagnostic commands, failure interpretation, and a safe decision…
Release verification: test user outcomes, not process status
Release verification: test user outcomes, not process status. A practical production guide with diagnostic commands, failure interpretation, and a safe…
The real cost of hosting open source on Render Free
Render can deploy open-source software quickly, but its runtime and storage model create tradeoffs. Here is where the friction appears and when a VPS is…
Render persistent disks solve storage—and create a scaling tradeoff
Render persistent disks make state durable, while attachment and scaling constraints change failover, replica placement, backups, and recovery.
Reserved capacity break-even: utilization and flexibility
Reserved capacity break-even: utilization and flexibility. A practical production guide with diagnostic commands, failure interpretation, and a safe…