Memory increase at reload


I’ve written an nginx module that creates a few large data structures at
initialization time. These data structures are part of the location
configuration for that module.

Whenever I do a reload, these data structures are re-created, and the
configuration points to the newly created ones. But the old data
are not freed up and still remain in the shared memory. This is leading
a lot of memory usage over repeated reloads.

Is there anyway I can avoid this memory pile-up while still being able
do multiple reloads?

Thanks in advance.