[OSM-talk] Important information for OpenPisteMap users
Steve Hill
steve at nexusuk.org
Mon Mar 8 12:25:23 GMT 2010
Some OpenPisteMap bits are changing and this may affect third party
software.
1. The tiles have moved to http://tiles.openpistemap.org. They are
currently being served from the old location as well, but this will be
discontinued in the following phases:
i) After a few weeks, tiles served from the old location will get a
"please update your software" watermark applied to them.
ii) A few weeks later, the old location will start returning "404 Not
Found"
If you are operating a web site that embeds OpenPisteMap using the map.js
and opm.js scripts served directly from the OPM server then you *probably*
don't need to do anything. Other software will need updating.
2. Owing to abuse by a small number of users (no, using a robot to pull
down a third of a million tiles a week is not acceptable behaviour),
OpenPisteMap will start banning people who download more than 20,000
tiles in a day or 40,000 in a week. As a point of comparison, the whole 3
Vallies resort at all zoom levels covers around 9,000 tiles, so there
shouldn't really be much need to exceed these limits. If you have a
specific reason why you need to then please discuss it with me - bandwidth
isn't free and a small number of users are disproportionately using a lot
of it.
Also, a polite request to robot writers: it is generally considered good
practice for robots to identify themselves in the UA string of their
requests. This is desiarable so that the authors of buggy/misbehaving
robots can be contacted and therefore fixed, and also so that website
operators can properly estimate the cost associated with various clients.
The vast majority of robot traffic that hits OpenPisteMap spoofs a "real
browser" UA string (most commonly Opera, but most of the common browsers
are represented too). If you're responsible for writing one of these
robots, please consider fixing your software and presenting a suitable UA
string.
--
- Steve
xmpp:steve at nexusuk.org sip:steve at nexusuk.org http://www.nexusuk.org/
Servatis a periculum, servatis a maleficum - Whisper, Evanescence
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