https://github.com/knetic/lcache

Real-through LRU in-memory cache with background refresh
https://github.com/knetic/lcache

Last synced: 7 months ago
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Real-through LRU in-memory cache with background refresh

• Host: GitHub
• URL: https://github.com/knetic/lcache
• Owner: Knetic
• License: mit
• Created: 2020-09-01T03:10:56.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2020-09-07T18:06:07.000Z (about 5 years ago)
• Last Synced: 2023-08-15T15:37:36.556Z (about 2 years ago)
• Language: Go
• Size: 40 KB
• Stars: 1
• Watchers: 4
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
lcache

====

`lcache` (L-Cache) is an in-memory read-through generic LRU cache for Go. It is heavily inspired by [Guava's LoadingCache](https://github.com/google/guava/wiki/CachesExplained), which the author has found to be one of the single most useful libraries in production use.

## How to use

To make a cache, implement and provide a `Loader`:

```go

type staticLoader struct {

    data map[string]int

}

func (loader *staticLoader) Load(key string) (interface{}, error) {

    // in practice, this would be some data that is expensive to load

    if num, exists := (*loader.data)[key]; !exists {

        return nil, nil

    } else {

        return num, nil

    }

}

data := map[string]int {"some key": 42}

cache, _ := lcache.NewCache(Params{

    Loader: &staticLoader{data: data},

    ...

})

value, _ := c.Get("some key")

// prints 42

fmt.Println(value)

```

## Specifics