Benedikt Meurer 68515818b9 perf(platform-server): use shared DomElementSchemaRegistry instance (#28150) (#28151)
Right now the `ServerRendererFactory2` creates a new instance of the
`DomElementSchemaRegistry` for each and every request, which is quite
costly (for the Tour of Heroes SSR this takes around **30%** of the
overall execution time). Since the schema is never modified, but only
used in a read-only fashion, it should be possible to re-use a single
instance instead.

Naive performance testing with 100 concurrent connections and 1000
requests in total shows an approximate **33%** improvement in Req/Sec
on the Tour of Heroes SSR example.

PR Close #28150

PR Close #28151
2019-01-16 11:56:53 -08:00

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