image courtesy johnson7
App Engine is generally a new paradigm for webapp developers; replacing sessions with memcache and a schemaless datastore just two elements requiring new thinking for old problems. Unfortunately there are a few more hidden nuisances which have the potential to waste programming time relatively early on. Here’s four of my personal head-bangers:
1. the datastore doesn’t always store Properties
I’ve had trouble with it refusing to store arbitrary entity props unless I assign them in the entity constructor itself (these fields were optional btw). Just setting prop values after initialisation then put() on the ds didn’t write them.
Continue reading ‘Google App Engine Datastore Gotchas’
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