Astro 2021-10-17T00:00:00.000Z https://ledermann.dev/feed.xml Georg Ledermann 2021-10-17T00:00:00.000Z 2021-10-17T00:00:00.000Z https://ledermann.dev/blog/2021/10/17/coding-time-visualization Georg Ledermann

The language chart on my homepage is not a wish list. It comes straight out of WakaTime and shows what my editor really saw last week.

2021-02-03T00:00:00.000Z 2021-02-03T00:00:00.000Z https://ledermann.dev/blog/2021/02/03/photovoltaik-dashboard-als-web-applikation Georg Ledermann

Meine Solaranlage sammelt im Minutentakt Hunderte Messwerte, aber die Hersteller-App machte zu wenig daraus. Also habe ich mein eigenes Echtzeit-Dashboard dafür gebaut.

2020-08-01T00:00:00.000Z 2020-08-01T00:00:00.000Z https://ledermann.dev/blog/2020/08/01/progressive-image-loading-with-blurhash Georg Ledermann

A whole photo, squeezed into a few dozen characters that render instantly as a blurred preview. Rails does the encoding, Vue.js the decoding.

2020-01-29T00:00:00.000Z 2020-01-29T00:00:00.000Z https://ledermann.dev/blog/2020/01/29/building-docker-images-the-performant-way Georg Ledermann

Two to three times faster CI builds, and the trick is not clever caching. It is baking every dependency into a prepared base image once.

2019-03-17T00:00:00.000Z 2019-03-17T00:00:00.000Z https://ledermann.dev/blog/2019/03/17/using-ultrahook-to-receive-webhooks-at-development Georg Ledermann

Testing webhooks locally is tricky: the sender cannot reach your laptop behind a firewall. UltraHook provides a free tunnel for incoming POST requests, so you can debug them on your own machine.

2018-09-17T00:00:00.000Z 2018-09-17T00:00:00.000Z https://ledermann.dev/blog/2018/09/17/updating-docker-services-with-portainer-webhooks Georg Ledermann

Deploying a new Docker image by hand means logging in, pulling, restarting. With a Portainer webhook, every successful CI build deploys itself.

2018-06-21T00:00:00.000Z 2018-06-21T00:00:00.000Z https://ledermann.dev/blog/2018/06/21/swagger-with-rails-know-your-options Georg Ledermann

Hand-written API docs are already wrong by the time you merge. Three Rails gems generate them from the source instead, and they disagree about how.

2018-05-15T00:00:00.000Z 2018-05-15T00:00:00.000Z https://ledermann.dev/blog/2018/05/15/exif-analyzer-for-active-storage Georg Ledermann

Most photos your users upload know exactly where they were taken. Active Storage throws that away, so I wrote a small analyzer that keeps it.

2018-04-27T00:00:00.000Z 2018-04-27T00:00:00.000Z https://ledermann.dev/blog/2018/04/27/dockerize-and-configure-javascript-single-page-application Georg Ledermann

Packing a compiled single-page app into a Docker image is easy. The harder part is making one image behave differently in staging and production without rebuilding it.

2018-04-19T00:00:00.000Z 2018-04-19T00:00:00.000Z https://ledermann.dev/blog/2018/04/19/dockerize-rails-the-lean-way Georg Ledermann

My Rails Docker image started at 1.6 GB. With an Alpine base and multi-stage builds I got it down to 329 MB.