memory consumption

[Mats Wichmann]

On 4/1/21 5:50 AM, Alexey wrote:
> Found it. As I said before the problem was lurking in the cache.
> Few days ago I read about circular references and things like that and
> I thought to myself that it might be the case. To build the cache I was
> using lots of 'setdefault' methods chained together
> 
> self.__cache.setdefault(cluster_name, {}).setdefault(database_name, {})...
> 
> and instead of wring a long lines I decided to divide it to increase
> readability
> 
> cluster = self.__cache.setdefault(cluster_name, {})
> database = database.setdefault(database_name, {})
> ...
> and I guess that was the problem.

I guess it is worth mentioning here that there are people who feel you 
shouldn't use setdefault() this way. setdefault is primarily a "getter", 
which has the side effect of filling in dict entry if one did not exist 
before returning it, and there some folks feel that using it primarily 
as a "setter" is abusing the interface...

Do with that what you will :)