Preconfigured connection in embedded evitaLab are sometimes not loaded

[lukashornych]

Preconfigured connections are passed to embedded evitaLab through cookies. After last update that should have fixed an issue with cookies not being overwritten correctly, loading evitaLab with old data, the current solution seems to have opposite problem. Sometimes data are not present at all.

It happens during first load of new browser tab. After page reload, data are loaded correctly.

[lukashornych]

The solution I settled at is to pass the data (server name, pre. connections, ...) to evitaLab through URL query params through redirect. This seems to be working quite well and it should hopefully solved both problems (old data and no data).

Support in evitaLab for this is implemented in lukashornych/evitalab#227

[lukashornych]

There seems to be issues in some browsers (Firefox only?) where when navigated link to evitaLab with demo snippet from evitaDB documentation site, it doesn't do a reload so data are not passed. Maybe it has something to do with caches? But subsequent refresh of that page does the server reload correctly.

Maybe we need to send something like

Cache-Control: no-store, no-cache, must-revalidate

[lukashornych]

Caching on Index.html is now disabled to always refresh evitaLab data. Assets use immutable caching for long time now as they are versioned in new evitaLab version.