covid19_scenarios
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Split app data per region and load on demand
🙋 Feature Request
🔦 Context
Currently the data for all countries is being statically bundled and loaded on startup https://github.com/neherlab/covid19_scenarios/tree/master/src/assets/data
This is redundant as users most likely are interested in one region or maybe a handful. This also makes the app startup slow, as the JSON are loaded along with the rest of the JS bundle and are then validated.
😯 Describe the feature
We want to split the data into chunks per region.
Decisions tomake:
- What loading mechanism to use, e.g. webpack's dynamic import (
import(chunk) => Promise<>
), plain HTTP requests from a public S3 bucket (https://github.com/neherlab/covid19_scenarios/issues/744) - Whether to merge all 4 pieces (cases, population, severity and scenario) into one file for that particular region, similar to how
Shareable
schema works for scenario uploads and URL sharing, or to keep 4 pieces separate (the consideration is that currently in the UI the case counts and age distribution can be changed independently from scenario params) - How to not break schemas too much and to maximize backwards compatibility across different I/O types
💻 Examples
💁 Possible Solution
Related
- https://github.com/neherlab/covid19_scenarios/issues/645
- https://github.com/neherlab/covid19_scenarios/issues/744