Caching blobs in shared memory for faster I/O

[gohar94]

Context

This PR is part of the work described in Azure/azure-functions-host#7310

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[kasobol-msft]

I suggest to convert this PR to draft while it's work in progress. Otherwise this will keep notifying people. https://github.blog/2019-02-14-introducing-draft-pull-requests/ .

I also suggest to review the design before implementing this.

[gohar94]

I suggest to convert this PR to draft while it's work in progress. Otherwise this will keep notifying people. https://github.blog/2019-02-14-introducing-draft-pull-requests/ .

I also suggest to review the design before implementing this.

@kasobol-msft Thanks - changed back to draft. What in particular are you referring to in terms of design?

[kasobol-msft]

For design, I suggest to start internal email thread with me, @fabiocav and @paulbatum .

[kasobol-msft]

Thank you for the context provided offline. This helped a lot to understand this PR.

Could you please update description of this PR to reference related work?
Could you also provide a short write up explaining the change for other reviewers?

[kasobol-msft]

This looks good. Please add test coverage and clean up changes in csproj and .Config files.

[gohar94]

@kasobol-msft Ready for your final pass. This PR will still have to wait for the WebJobs SDK changes to go in though since that's where the new interfaces are defined.