This repository has been archived by the owner on Apr 2, 2024. It is now read-only.
generated from mrz1836/go-template
-
-
Notifications
You must be signed in to change notification settings - Fork 7
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Added new cache alternative solution: FreeCache
- Loading branch information
Showing
14 changed files
with
158 additions
and
138 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| package cachestore | ||
|
|
||
| import ( | ||
| "errors" | ||
| "runtime/debug" | ||
|
|
||
| "github.com/coocood/freecache" | ||
| "github.com/mrz1836/go-cache" | ||
| ) | ||
|
|
||
| // loadFreeCache will load the FreeCache client | ||
| func loadFreeCache() *freecache.Cache { | ||
| // In bytes, where 1024 * 1024 represents a single Megabyte, and 100 * 1024*1024 represents 100 Megabytes. | ||
| cacheSize := 100 * 1024 * 1024 | ||
| c := freecache.NewCache(cacheSize) | ||
| debug.SetGCPercent(20) | ||
| return c | ||
| } | ||
|
|
||
| // writeLockFreeCache will write a lock record into memory using a secret and expiration | ||
| // | ||
| // ttl is in seconds | ||
| func writeLockFreeCache(freeCacheClient *freecache.Cache, lockKey, secret string, ttl int64) (bool, error) { | ||
|
|
||
| // Test the key and secret | ||
| if err := validateLockValues(lockKey, secret); err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| // Try to get an existing lock (if it fails, make a new lock) | ||
| lockKeyBytes := []byte(lockKey) | ||
| secretBytes := []byte(secret) | ||
| data, err := freeCacheClient.Get(lockKeyBytes) | ||
| if err != nil && errors.Is(err, freecache.ErrNotFound) { | ||
| return true, freeCacheClient.Set(lockKeyBytes, secretBytes, int(ttl)) | ||
| } else if err != nil { | ||
| return false, err | ||
| } else if err == nil && len(data) == 0 { // No lock found | ||
| return true, freeCacheClient.Set(lockKeyBytes, secretBytes, int(ttl)) | ||
| } | ||
|
|
||
| // Check secret | ||
| if string(data) != secret { // Secret mismatch (lock exists with different secret) | ||
| return false, cache.ErrLockMismatch | ||
| } | ||
|
|
||
| // Same secret / lock again? | ||
| return true, freeCacheClient.Set(lockKeyBytes, secretBytes, int(ttl)) | ||
| } | ||
|
|
||
| // releaseLockFreeCache will attempt to release a lock if it exists and matches the given secret | ||
| func releaseLockFreeCache(freeCacheClient *freecache.Cache, lockKey, secret string) (bool, error) { | ||
|
|
||
| // Test the key and secret | ||
| if err := validateLockValues(lockKey, secret); err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| // Try to get an existing lock (if it fails, lock does not exist) | ||
| lockKeyBytes := []byte(lockKey) | ||
| data, err := freeCacheClient.Get(lockKeyBytes) | ||
| if err != nil && errors.Is(err, freecache.ErrNotFound) { | ||
| return true, nil | ||
| } else if err != nil { | ||
| return false, err | ||
| } else if err == nil && len(data) == 0 { // No lock found | ||
| return true, nil | ||
| } | ||
|
|
||
| // Check secret if found | ||
| if string(data) == secret { // If it matches, remove the key | ||
| freeCacheClient.Del(lockKeyBytes) | ||
| return true, nil | ||
| } | ||
|
|
||
| // Key found does not match the secret, do not remove | ||
| return false, cache.ErrLockMismatch | ||
| } |
Oops, something went wrong.