mirror of https://github.com/jlelse/GoBlog
29 lines
833 B
Go
29 lines
833 B
Go
package main
|
|
|
|
import (
|
|
"database/sql"
|
|
"time"
|
|
)
|
|
|
|
func cachePersistently(key string, data []byte) error {
|
|
date, _ := toLocal(time.Now().String())
|
|
_, err := appDbExec("insert or replace into persistent_cache(key, data, date) values(@key, @data, @date)", sql.Named("key", key), sql.Named("data", data), sql.Named("date", date))
|
|
return err
|
|
}
|
|
|
|
func retrievePersistentCache(key string) (data []byte, err error) {
|
|
if row, err := appDbQueryRow("select data from persistent_cache where key = @key", sql.Named("key", key)); err == sql.ErrNoRows {
|
|
return nil, nil
|
|
} else if err != nil {
|
|
return nil, err
|
|
} else {
|
|
err = row.Scan(&data)
|
|
return data, err
|
|
}
|
|
}
|
|
|
|
func clearPersistentCache(pattern string) error {
|
|
_, err := appDbExec("delete from persistent_cache where key like @pattern", sql.Named("pattern", pattern))
|
|
return err
|
|
}
|