There is an article series about the datastore. It explains that the Timeouts are inevitable. It gives the reason for the timeouts. They will always be part of Bigtable and the Datastore of GAE.
The only solution is a retry on EVERY read. The get by id/key and the queries. If you do that then very few reads will result in a Timeout. I wait first 3 and then 6 secs between each request. I log each Timeout. If still Timeout after 3 read tries I raise the exception. The result is very few final read Timeouts. The log shows frequent requests that need a retry, but most of them will succeed with the first. For speed, fetch the Static content object by key_name, and key_name is the file path. 2010/1/26 phtq <pher...@typequick.com.au>: > Our application error log for the 26th showed around 160 failed http > requests due to timeouts. That's 160 users being forced to hit the > refresh button on their browser to get a normal response. A more > typical day has 20 to 60 timeouts. We have been waiting over a year > for this bug to get fixed with no progress at all. Its beginning to > look like it's unfixable so perhaps Google could provide some > workaround. In our case, the issue arises because of the 1,000 file > limit. We are forced to hold all our .js, .css, .png. mp3, etc. files > in the database and serve them from there. The application is quite > large and there are well over 10,000 files. The Python code serving up > the files does just one DB fetch and has about 9 lines of code so > there is no way it can be magically restructured to make the Timeout > go away. However, putting all the files on the app engine as real > files would avoid the DB access and make the problem go away. Could > Google work towards removing that file limit? > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
