Lighting talk sur le connecteur Go pour la base de donnée NoSql couchbase

1. Go-Couchbase

2. Bio
Edouard Buschini
SRE@Winamax
Go ~1 an

3. Couchbase
Base de donnée NoSQL
CAP Theorem: AP
On-Memory
Multi-threaded
Réplication entre cluster (XDCR)

4. Couchbase
Réparti les écritures sur tous les noeuds du cluster
Master-Master/Master-Slave
entre clusters (XDCR)

5. Go-Couchbase
Simple & Thread Safe
$> go get github.com/couchbase/go-couchbase
import “github.com/couchbase/go-couchbase”

6. Go-Couchbase Connect()
c, err := couchbase.Connect("http://localhost:8091/")
if err != nil {
log.Fatalf("Error connecting: %v", err)
}
pool, err := c.GetPool("default")
if err != nil {
log.Fatalf("Error getting pool: %v", err)
}
bucket, err := pool.GetBucket("default")
if err != nil {
log.Fatalf("Error getting bucket: %v", err)
}

7. Go-Couchbase Set()
v := make(map[string]string)
v["nosql"] = "couchbase!"
exp := 0
key := “RandomKey”
err := bucket.Set(key, exp, v)
if err != nil {
log.Fatalf(“Error setting key: %v”, err)
}

8. Go-Couchbase Add()
v := make(map[string]string)
v["nosql"] = "couchbase!"
exp := 0
key := “RandomKey”
added, err := bucket.Add(key, exp, v)
if err != nil {
log.Fatalf(“Error adding key: %v”, err)
}
if !added {
log.Println(“Key already exists!”)
}

9. Go-Couchbase Get()
var v interface{}
key := “RandomKey”
err := bucket.Get(key, &v)
if err != nil {
log.Fatalf(“Error getting key: %v”, err)
}

10. Go-Couchbase Update()
key := “RandomKey”
exp := 0
err := bucket.Update(key, exp, func(current []byte) (updated []byte, err error) {
if current == nil {
return nil, couchbase.UpdateCancel
}
// Verify current
// To safely delete : return nil, nil
return []byte(`{“nosql”:”couchbase!”}`), nil
})
if err != nil {
log.Fatalf(“Error updating key: %v”, err)
}

11. Go-Couchbase Delete()
key := “RandomKey”
err := bucket.Delete(key)
if err != nil {
log.Fatalf(“Error deleting key: %v”, err)
}

12. Use Case Sync-Gateway

13. Merci !
twitter.com/@moonbocal
github.com/tehmoon
http://www.couchbase.com/nosql-databases/downloads