February 2021
80 posts: 11 entries, 11 links, 6 quotes, 52 beats
Feb. 1, 2021
JMeter Result Analysis using Datasette (via) NaveenKumar Namachivayam wrote a detailed tutorial on using Datasette (on Windows) and csvs-to-sqlite to analyze the results of JMeter performance test runs and then publish them online using Vercel.
Feb. 2, 2021
Feb. 3, 2021
Cleaning Up Your Postgres Database (via) Craig Kerstiens provides some invaluable tips on running an initial check of the health of a PostgreSQL database, by using queries against the pg_statio_user_indexes table to find the memory cache hit ratio and the pg_stat_user_tables table to see what percentage of queries to your tables are using an index.
Feb. 4, 2021
Serving map tiles from SQLite with MBTiles and datasette-tiles
Working on datasette-leaflet last week re-kindled my interest in using Datasette as a GIS (Geographic Information System) platform. SQLite already has strong GIS functionality in the form of SpatiaLite and datasette-cluster-map is currently the most downloaded plugin. Most importantly, maps are fun!
[... 1,334 words]Feb. 6, 2021
Feb. 7, 2021
Weeknotes: Mostly messing around with map tiles
Most of what I worked on this week was covered in Serving map tiles from SQLite with MBTiles and datasette-tiles. I built two new plugins: datasette-tiles for serving map tiles, and datasette-basemap which bundles map tiles for zoom levels 0-6 of OpenStreetMap. I also released download-tiles for downloading tiles and bundling them into an MBTiles database.
[... 350 words]Video introduction to Datasette and sqlite-utils
I put together a 17 minute video introduction to Datasette and sqlite-utils for FOSDEM 2021, showing how you can use Datasette to explore data, and demonstrating using the sqlite-utils command-line tool to convert a CSV file into a SQLite database, and then publish it using datasette publish. Here’s the video, plus annotated screen captures with further links and commentary.