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Code Issues 8 Packages Projects Releases 10 Wiki Activity

Optimistically-update key values

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This commit is contained in:
Gregory Schier
2023-03-25 21:54:00 -07:00
parent 7e57bb98a8
commit 96aacec4fc
2 changed files with 8 additions and 2 deletions
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7
src-web/hooks/useKeyValue.ts
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@@ -1,4 +1,4 @@
import { useMutation, useQuery } from '@tanstack/react-query';
import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
import { useCallback } from 'react';
import { buildKeyValueKey, getKeyValue, setKeyValue } from '../lib/keyValueStore';
@@ -24,6 +24,7 @@ export function useKeyValue<T extends Object>({
key: string | string[];
defaultValue: T;
}) {
const queryClient = useQueryClient();
const query = useQuery<T>({
queryKey: keyValueQueryKey({ namespace, key }),
queryFn: async () => getKeyValue({ namespace, key, fallback: defaultValue }),
@@ -31,6 +32,10 @@ export function useKeyValue<T extends Object>({
const mutate = useMutation<T, unknown, T>({
mutationFn: (value) => setKeyValue<T>({ namespace, key, value }),
onMutate: (value) => {
// k/v should be as fast as possible, so optimistically update the cache
queryClient.setQueryData(keyValueQueryKey({ namespace, key }), value);
},
});
const set = useCallback(