Author Archives: James Lin

Internal SOA data transfer via memcache?

We have been working on a python/django project which is SOA oriented, all sites(systems) are internal and communications are done via http restful api requests. Our setup share the same set of memcache servers to cache data individually on each sub site(system). Often when site A wants data from site B, site A makes a… Read More »

Python performance tips

I came across this python performance tips article this afternoon and found it very interesting. Will definitely start using those tips in my next project.

Django snippet: reduce image size during upload

Just a quick python snippet I written today to reduce the image size during upload class PhotoField(forms.FileField, object): def __init__(self, *args, **kwargs): super(PhotoField, self).__init__(*args, **kwargs) self.help_text = “Images over 500kb will be resized to keep under 500kb limit, which may result in some loss of quality” def validate(self,image): if not str(image).split(‘.’)[-1].lower() in [“jpg”,”jpeg”,”png”,”gif”]: raise ValidationError(“File… Read More »

Creating custom log handler that logs to database models in django

I was told to create some kind of logging mechanism to insert logs into database, and make sure it’s generic. So after some thought I decided to mimic the builtin RotatingFileHandler and write a DBHandler. The RotatingFileHandler allows you to specify which file to write to and rotate files, therefore my DBHandler should also allow… Read More »