Prevent @client @export from firing unnecessary network requests #5946
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benjamn
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PR #4604 fixed an issue where changes made to `@client @export` based variables didn't always result in re-running the query that was using the variable. Unfortunately, these changes are a bit too aggressive. They're triggering a `refetch` when an `@client @export` based variable changes (and a few additional conditions are met), and while using the `ObservableQuery.refetch()` method does fix the original issue, it leads to a situation where the query being re-run is always fired over the network, even if the updated query could have been resolved from the cache. `ObservableQuery.refetch()` forces queries to use a network based fetch policy, which means if the query was originally fired with a `cache-first` policy (for example), and has matching data in the cache after taking into consideration the new variable, that data won't be used and instead an extra unnecessary network request will fire. This commit addresses the issue by leveraging `ObservableQuery.setVariables()` instead of automatically refetching. `setVariables` will attempt to resolve the updated query from the cache first, then only fire it over the network if required.
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hwillson
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Feb 23, 2020
The changes made in #5946 helped address an issue where queries with `@client @export` variables were making unnecessary network requests. While those changes work, they're currently preventing watched queries using `@client @export` from updating the `@export`ed variable, as new data is received. This commit fixes that issue.
hwillson
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Feb 23, 2020
The changes made in #5946 helped address an issue where queries with `@client @export` variables were making unnecessary network requests. While those changes work, they're currently preventing watched queries using `@client @export` from updating the `@export`ed variable, as new data is received. This commit fixes that issue.
hwillson
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Feb 24, 2020
The changes made in #5946 helped address an issue where queries with `@client @export` variables were making unnecessary network requests. While those changes work, they're currently preventing watched queries using `@client @export` from updating the `@export`ed variable, as new data is received. This commit fixes that issue.
hwillson
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Feb 25, 2020
The changes made in #5946 helped address an issue where queries with `@client @export` variables were making unnecessary network requests. While those changes work, they're currently preventing watched queries using `@client @export` from updating the `@export`ed variable, as new data is received. This commit fixes that issue.
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PR #4604 fixed an issue where changes made to
@client @exportbased variables didn't always result in re-running the query that was using the variable. Unfortunately, these changes are a bit too aggressive. They're triggering arefetchwhen an@client @exportbased variable changes (and a few additional conditions are met), and while using theObservableQuery.refetch()method does fix the original issue, it leads to a situation where the query being re-run is always fired over the network, even if the updated query could have been resolved from the cache.ObservableQuery.refetch()forces queries to use a network based fetch policy, which means if the query was originally fired with acache-firstpolicy (for example), and has matching data in the cache after taking into consideration the new variable, that data won't be used and instead an extra unnecessary network request will fire.This commit addresses the issue by leveraging
ObservableQuery.setVariables()instead of automatically refetching.setVariableswill attempt to resolve the updated query from the cache first, then only fire it over the network if required.