The promise of digital mapping is to provide a shared and real-time view of the state of the underlying system.
pg_eventserv is a free and open-source component that helps fulfill the promise of real-time event modeling and shared views in PostgreSQL.
By connecting to PostgreSQL and listening on specified channels, pg_eventserv captures database notifications and forwards them to web clients, enabling real-time updates and synchronization of data displayed on maps or other web interfaces.
pg_eventserv does one thing and one thing only: take events generated by the PostgreSQL NOTIFY command and passes the payload along to waiting WebSockets clients.
pg_eventserv is free and easy to install and you can find it here: https://github.com/CrunchyData/pg_eventserv
What this means is that any client can watch for notifications and update as changes in the database happen.
Real-time data!
Here is a link to a Youtube video demonstration of pg_eventserv in action!
https://youtu.be/UakRtYmoWow
I will let Paul Ramsey the creator of pg_eventserv explain all this in more detail in this episode.
If you want to reach out to Paul the best place to do that is http://blog.cleverelephant.ca/
Or if you want to listen to previous episodes with Paul you might find these interesting
Raster in the database?
https://mapscaping.com/podcast/rasters-in-a-database/
Dynamic Vector Tiles Straight From The Database
https://mapscaping.com/podcast/dynamic-vector-tiles-straight-from-the-database/
Spatial SQL- GIS Without The GIS
https://mapscaping.com/podcast/spatial-sql-gis-without-the-gis/
also ... If you are interested in spatial databases at scale ... you might find this episode interesting
https://mapscaping.com/podcast/distributing-geospatial-data/
Some more episodes you might enjoy
ESRI, GIS careers, Geospatial Data Science
QGIS, Geospatial Python, ArcGIS Pro
Google Maps, Geomatics, Cartography
Location Intelligence, Mapping
Serverless Geospatial
Earth Observation - machine learning and artificial intelligence
PostgreSQL - An open source geospatial database for GIS practitioners
Geo-coding as a tool for risk assessment and the role of GIS in the insurance industry
Is R the language of geospatial data?
Geospatial intelligence from the sky, automating the mining industry
The evolution of geospatial file formats and data exchange - An interview with the Co founder of Safe Software
Trends in geospatial and initiatives in the community
Travel Time - A better way of doing location based search
Remote sensing - building the globe in 3D
Addressing the world - a coordinate system from humans
Don't just make the dots, connect them
Building geospatial truth sets
Mapping the interface between vehicle traffic and pedestrians
Creating maps for journalists
Geomob - Geoinnovation for the people by the people
Building footprints at scale
Remote sensing and future of earth observation
A marketplace for geospatial data and workflows
Geospatial visualisations matter - Civil engineering meets online gaming
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Regenerative Agriculture Podcast
Bedrock: Earth’s Earliest History
Kosmographia
The Great Simplification with Nate Hagens
Climate One