21 lines
560 B
Markdown
21 lines
560 B
Markdown
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## File cache
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Package `file_cache` implements a helper function that would cache results of
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an expensive operation to a file. It would use file contents when the file exist
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and won't call the function again unless the file is deleted.
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```go
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import "github.com/localhots/gobelt/filecache"
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```
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```go
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ctx := context.Background()
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var items []Item
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filecache.Load(&items, "tmp/cache/items.json", func() {
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err := conn.Query(ctx, "SELECT * FROM items").Load(&items).Error()
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if err != nil {
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log.Fatalf("Failed to load items: %v", err)
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}
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})
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```
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