data.json takes very long to load

[marians]

Here is a test via DSL:

http://www.webpagetest.org/result/120428_5G_44HE5/1/details/

It shows that data.json takes more than 11 seconds to load.

If users start to interact with the sliders before the loading is finished, they won't see a result visualization until this data is completely loaded and processed. In order to improve the experience here, we should try to make the data more compact.

GZip compression would help, as an example.

[marians]

Might be useful: http://wiki.nginx.org/HttpGzipModule

[rufuspollock]

@marians gzip might help a bit but the file is 1.4MB! Several points:

• For most of the stuff we only need one years data (not every years data).
• We only need the metadata to show the sliders
  • We can always show a loading icon in the graph area until data has loaded

[rufuspollock]

I've put in gzip but it does not seem to be having much of an effect (perhaps it is misconfigured ...)?

[marians]

Currently data.json isn't GZip encoded. If you look at the response headers, it's not there. There should be something like "Content-Encoding: gzip".

Where did you active compression? in nginx? If the link in my comment above applies, per default the configuration only applies to html content. To extend that, you will have to modify "gzip_types".