Archive - Podo Stack

Postgres statistics: why the planner picks the wrong index

pg_statistic, ANALYZE, default_statistics_target, extended statistics, autovacuum

Jul 10 • Ilia Gusev

Redis memory: why 16 GB of data needs 32 GB of RAM

Fragmentation, RSS, jemalloc, eviction, fork overhead

Jul 8 • Ilia Gusev

Issue #025 - Four ways to put secrets in Git: three are wrong for you

SOPS and age, Sealed Secrets, External Secrets Operator, Vault and OpenBao, threat models

Jul 7 • Ilia Gusev

Iceberg vs Delta vs Hudi: the table-format war is over

Open table formats, metadata layers, snapshots, REST catalogs, interop

Jul 3 • Ilia Gusev

kube-apiserver watch cache: the layer that saves etcd

LIST-WATCH, resourceVersion, bookmarks, relist storms, consistent reads

Jul 1 • Ilia Gusev

June 2026

Issue #024 - eBPF reads your TLS traffic without the private key

SSL_read uprobes, Go crypto/tls offsets, Pixie vs Beyla vs eCapture, kTLS, the threat model

Jun 30 • Ilia Gusev

Postgres partitioning: the pruning that doesn't happen

Declarative partitioning, partition pruning, partition-wise joins, Citus, sharding

Jun 26 • Ilia Gusev

Redis persistence: why RDB and AOF both lie about durability

RDB snapshots, AOF fsync, fork latency, hybrid preamble, replication

Jun 24 • Ilia Gusev

Issue #023 - Namespaces aren't free: where 7 TiB of memory was hiding

DaemonSet listwatch, per-node informer cache, Calico netpols, Vector log source, kube-state-metrics cardinality

Jun 23 • Ilia Gusev

Kubelet eviction: the logic that kills the wrong pod

soft vs hard thresholds, memory.available, nodefs, QoS ranking, kernel OOM race, node NotReady cascade

Jun 19 • Ilia Gusev

PgBouncer modes: why your pool either leaks or deadlocks

process-per-connection cost, session vs transaction vs statement mode, pool_size math, prepared statements, advisory locks

Jun 17 • Ilia Gusev

Issue #022 - Valkey, one year on: you're probably running it already

Redis license flip, BSD vs AGPL copyleft, hyperscaler defaults, distro swaps, trivial migration

Jun 16 • Ilia Gusev

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