func main() {
d := diskv.New(diskv.Options{
BasePath: "data",
Transform: blockTransform,
CacheSizeMax: 1024 * 1024, // 1MB
})
for _, valueStr := range []string{
"I am the very model of a modern Major-General",
"I've information vegetable, animal, and mineral",
"I know the kings of England, and I quote the fights historical",
"From Marathon to Waterloo, in order categorical",
"I'm very well acquainted, too, with matters mathematical",
"I understand equations, both the simple and quadratical",
"About binomial theorem I'm teeming with a lot o' news",
"With many cheerful facts about the square of the hypotenuse",
} {
d.Write(md5sum(valueStr), []byte(valueStr))
}
var keyCount int
for key := range d.Keys(nil) {
val, err := d.Read(key)
if err != nil {
panic(fmt.Sprintf("key %s had no value", key))
}
fmt.Printf("%s: %s\n", key, val)
keyCount++
}
fmt.Printf("%d total keys\n", keyCount)
// d.EraseAll() // leave it commented out to see how data is kept on disk
}
// Creates the cache object with the cache provider
func SetCacheProvider() cache.CacheProvider {
cacheAdapter := diskv.New(diskv.Options{
BasePath: os.Getenv("RESIZER_CACHE_PATH"),
Transform: blockTransform,
CacheSizeMax: 1024 * 1024 * 1024,
})
return cache.CacheProvider{
CacheAdapter: cacheAdapter,
LruCache: cache.LruCacheConfiguration{
Enabled: true,
Size: 128,
},
}
}
func main() {
d := diskv.New(diskv.Options{
BasePath: "my-diskv-data-directory",
Transform: func(s string) []string { return []string{} },
CacheSizeMax: 1024 * 1024, // 1MB
})
key := "alpha"
if err := d.Write(key, []byte{'1', '2', '3'}); err != nil {
panic(err)
}
value, err := d.Read(key)
if err != nil {
panic(err)
}
fmt.Printf("%v\n", value)
if err := d.Erase(key); err != nil {
panic(err)
}
}