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Postgres explain analyze: how to read what the planner picked
seq scan vs index scan, cost units, rows estimate vs actual, BUFFERS, planner statistics, when "Seq Scan" wins
Jun 5
•
Ilia Gusev
OTel collector: the observability gateway nobody scales right
receivers, processors, exporters, memory limiter, batch processing, fan-out, pipeline-aware sampling
Jun 3
•
Ilia Gusev
Issue #020 - Image Preload Operator: zero-second cold start, even for 8GB images
pre-cache DaemonSet, image warm pool, Stargz callback, sub-second startup for 8GB images
Jun 2
•
Ilia Gusev
May 2026
Postgres autovacuum: why your 200GB table won't release space
dead tuples, MVCC visibility, vacuum vs vacuum full, autovacuum_naptime, hot standby conflicts
May 29
•
Ilia Gusev
Pod probes: the liveness check that restarts healthy apps
liveness vs readiness vs startup, restart-loop pitfall, initialDelaySeconds, exec vs httpGet vs tcpSocket
May 27
•
Ilia Gusev
Issue #019 - Service account tokens: the expiry that breaks your CI on weekends
projected volume tokens, 1h expiry, kubelet rotation, legacy operator cache, CI breakage timeline
May 26
•
Ilia Gusev
Pod shutdown: the 30-second default that silently drops requests
SIGTERM signal, preStop hook, terminationGracePeriodSeconds, in-flight request drain, connection draining
May 22
•
Ilia Gusev
kube-proxy modes: iptables vs IPVS, and why "proxy" is misleading
iptables rules, IPVS hashing, conntrack table, connection drift on rule reload
May 20
•
Ilia Gusev
Issue #018 - Flux OCIRepository: the GitOps that stopped using Git
OCIRepository CRD, Bucket Source Controller, OCI hydration, manifests-as-images
May 19
•
Ilia Gusev
Inode exhaustion: the disk-full error that your free-space graph doesn't show
How Linux filesystems track files separately from data, why small-file workloads break differently, and how to diagnose it before it bites
May 15
•
Ilia Gusev
1
Cilium Egress Gateway: stable outbound IPs for pods that need them
How eBPF SNAT gives selected pods a predictable egress IP without a cloud NAT gateway
May 13
•
Ilia Gusev
Podo #017: Postgres on Kubernetes: Five Places the Control Plane and the Database Fight Over Recovery
CloudNativePG quorum failover, local vs replicated storage, quorum-aware PDB, connection pooler placement, and backup primitives
May 12
•
Ilia Gusev
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