[OSRM-talk] OSRM demoserver update

[Daniel Patterson]

The swapover has been completed.  Please open tickets if you see any
server-move problems crop up.

daniel

On Fri, Oct 27, 2017 at 5:14 PM, Daniel Patterson <daniel at mapbox.com> wrote:

> Hi everyone,
>
>   As most of you have probably noticed, the OSRM demoserver has been
> pretty unreliable over the last few months.
>
>   This weekend, I'm going to migrate it to live alongside our production
> infrastructure here at Mapbox.  This means it'll get redundancy and
> monitoring!
>
>   I'm hoping the transition is mostly seamless, but there will be a few
> changes you may notice:
>
>     1. We'll be switching from `osrm.routed`, to `osrm-routed.js` (
> https://github.com/Project-OSRM/osrm-backend/pull/4604).  I've tried my
> best to make it fully compatible, but, well, there are always bugs.
>     2. The demoserver will only run stable releases, it will no longer run
> from master.
>     3. The dataset is a slightly modified car.lua, *plus* Mapbox's
> freeflow traffic data over the top - this should give more accurate ETAs in
> areas where Mapbox has traffic coverage than plain car.lua.
>     4. Hints are disabled on the new setup - the hint= parameter is
> accepted but ignored.  This is because we're cycling the dataset every few
> hours behind the scenes, hints get invalidated quickly.
>     5. The demoserver will have a service-wide rate limit of 5000
> req/minute.  Looking at past logs, it stays below this about 98% of the
> time, but be prepared for HTTP 429 responses, and be aware that heavy usage
> may cause rate limiting for everyone else if you flood the server.
>     6. Some error messages will change - this is mostly the result of the
> switch from osrm-routed to osrm-routed.js and using a different URL parsing
> library.
>
>   I plan on doing the switchover starting now - there may be some DNS
> outage required while I do the reconfiguration.  Once the swapover is done,
> the hope is that we'll have a much more reliable service that costs us less
> money to operate.
>
>   If you notice any weirdness that seem the result of the switchover,
> please open tickets in the osrm-backend project.
>
> daniel
>
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