GitHub - flatgeobuf/flatgeobuf: A performant binary encoding for geographic data based on flatbuffers
A performant binary encoding for geographic data based on flatbuffers - flatgeobuf/flatgeobuf
In particular, when using the spatial filter to get a subset of features, multiple requests will be made. Often round-trip latency, rather than throughput, is the limiting factor. A caching CDN can be especially helpful here.
Fetching a subset of a file over HTTP utilizes Range requests. If the page accessing the FGB is hosted on a different domain from the CDN, Cross Origin policy applies, and the required Range header will induce an OPTIONS (preflight) request.
Popular CDNs, like Cloudfront, support Range Requests, but don't cache the requisite preflight OPTIONS requests by default. Consider enabling OPTIONS request caching . Without this, the preflight authorization request could be much slower than necessary.