Add cache layer to axios

[yaodingyd]

Should be merged after #1028 to validate

When investigating #1026 I found out there is no existing cache layer on axios so there's a lot of duplicate calls:

For example when in site page, there are four identical calls to latest_data

with axios-cache-interceptor in place, we only have unique calls

the default cache TTL is 5min which looks good. I don't think the backend data will change in a 5min window.

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[pullrequest]

PullRequest Breakdown

Reviewable lines of change

+ 18
- 5

44% TypeScript
30% TypeScript (tests)
22% TSX
4% JSON

Generated lines of change

+ 24
- 0

Type of change

Minor Update - These changes appear to be a minor update to existing functionality and features.

[pullrequest]

I have no concerns with this pull request.

Jacob

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[ericboucher]

Nice addition @yaodingyd. You might need to mock caching in the tests to turn the CI green.

[yaodingyd]

tests are fixed