Ruohang Feng
Ruohang Feng (@Vonng) is the author of PG Exporter and Pigsty. His work focuses on PostgreSQL infrastructure and monitoring.
- pigsty.io — the PostgreSQL distribution this exporter ships with
- @Vonng on GitHub — the repositories behind these projects
- vonng.com — long-form writing
PG Exporter v1.4.1
Subscription count and label validation fixes; RPM rename
PG Exporter v1.4.0
Snapshot histograms, pg_xact_age collector, HTTP hardening
PG Exporter v1.3.0
PostgreSQL 19 support, new PG19 collectors and branches
PG Exporter v1.2.2
Routine Go 1.26.2 refresh, no functional changes
PG Exporter v1.2.1
Config style cleanup, Go 1.26.1 refresh
PG Exporter v1.2.0
Hot reload, non-blocking startup, PG9.x legacy support
PG Exporter v1.1.2
pg_timeline configuration fix and dependency updates
PG Exporter v1.1.1
New pg_timeline collector, pg_sub_16 branch, bug fixes
PG Exporter v1.1.0
Update default metrics collectors, bump to go 1.25.5
PG Exporter v1.0.3
Routine update on 1.25.4, fix unsupported libpq env
PG Exporter v1.0.2
More build platforms with GoReleaser
PG Exporter v1.0.1
Docker Hub images, Go 1.24.5, disable pg_tsdb_hypertable
PG Exporter v1.0.0
PostgreSQL 18 support, new WAL/checkpointer/I/O metrics
PG Exporter v0.9.0
TimescaleDB, Citus, pg_wait_sampling collectors
PG Exporter v0.8.1
Dependencies update, docker image tags
PG Exporter v0.8.0
PgBouncer 1.24 support, Go 1.24, logging refactor
PG Exporter v0.7.1
Routine update, configuration as Reader support
PG Exporter v0.7.0
PostgreSQL 17 support, predicate queries feature
PG Exporter v0.6.1
Security dependency updates and connection-timeout fix
PG Exporter v0.6.0
PostgreSQL 16 support, ARM64 packages, security fixes
PG Exporter v0.5.0
RPM/DEB builds, column scaling, metrics enhancements
PG Exporter v0.4.1
Collector updates, connect-timeout parameter
PG Exporter v0.4.0
PostgreSQL 14 support, auto-discovery feature
PG Exporter v0.3.2
Shadow DSN fixes, documentation updates
PG Exporter v0.3.1
Configuration fixes for older PostgreSQL versions
PG Exporter v0.3.0
PostgreSQL 13 support, REST APIs, dummy server
PG Exporter v0.2.0
YUM packages, configuration reload support
PG Exporter v0.1.2
Dynamic configuration reload, bulky mode
PG Exporter v0.1.1
Startup hang bug fix
PG Exporter v0.1.0
Initial stable release
PG Exporter v0.0.5
Timeouts, fatal collectors, priority semantics, pg_up fixes, and per-collector documentation
PG Exporter v0.0.4
Production tested release
PG Exporter v0.0.3
Production environment testing
PG Exporter v0.0.2
Early testing release
PG Exporter v0.0.1
Initial release with PgBouncer mode
Turning PostgreSQL CSV Logs into Durable Metrics
Read complete CSV records, persist cursors and aggregates, and publish bounded PostgreSQL log metrics
Caching pgBackRest Metrics Outside the Scrape Path
Run pgBackRest in a bounded background worker and serve the latest valid metrics snapshot
The PostgreSQL Observability Product We Chose Not to Build
Why a separate incident workbench became a CSV log collector inside PG Exporter
One Endpoint, Several Sources: The Composite Exporter Contract
Combine PostgreSQL and optional metric sources with fixed ownership and independent failure handling
Snapshot Histograms Are Gauges, Not Counters
Why SQL snapshot distributions expose bucket, count, and sum as Gauge series