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t-rex-tileserver / t-rex

t-rex is a vector tile server specialized on publishing MVT tiles from your own data
https://t-rex.tileserver.ch/
MIT License
545 stars 68 forks source link

t-rex vs other MVT servers? #293

Closed not-my-profile closed 1 year ago

not-my-profile commented 1 year ago

I am a bit confused by t-rex being an MVT server built on PostGIS but not using PostGIS' ST_AsMVT function. What is the reasoning behind that? Other PostGIS MVT servers like Martin, pg_tileserv and Tegola apparently all use ST_AsMVT.

In #287 @xamanu implies that not using ST_AsMVT makes t-rex unsuitable for some kind of layers. Is that the case? If so for what kind of data can t-rex be used? The README just says that t-rex is specialized on publishing MVT tiles from "your own data" but does not mention any limitations.

pka commented 1 year ago

The main reason is that t-rex predates ST_AsMVT for years. Not using ST_AsMVT has some advantages and disadvantages. I've made a few presentations comparing vector tile servers. The last one in english was probably at FOSS4G 2021. Slides are available here: https://blog.sourcepole.ch/2021/09/29/foss4g-2021/