GC memory fragmentation

[kdevel]

On Sunday, 11 April 2021 at 09:10:22 UTC, tchaloupka wrote:
> we're using vibe-d (on Linux) for a long running REST API 
> server [...]

> [...] lot of small allocations (postgresql query, result 
> processing and REST API json serialization).

I am wondering about your overall system design. Are there any 
"shared" data held in the REST API server which are not in the 
PostgreSQL database? I mean: If there are two potentially 
concurrent REST API calls is it necessary that these are handled 
both by the same operating system process?