[jodrellblank]

Two web apps I use every day at work have this behaviour when I look away and my session times out. Both of them break web expectations by having the same generic URL for every page. I leave half a dozen tabs open, come back later or the next day and if I'm not careful to login again in a new tab before I refresh them, they're lost. It's the kind of thing which makes me convinced the developers never use their own system, never sit with real users, and think a lot less of the vendor even though I have no power to influence the decision to renew them or not.

[remram]

I think one problem of JavaScript routing is that it needs two groups of people to communicate for it to work: the ops people configuring nginx/CDN need to talk with the JavaScript devs making the SPA. Worse, if they get it wrong it will break in subtle ways (e.g. appear to work unless you reload of share a direct link).

A recipe for disaster.