Expiration

 1package main
 2
 3import (
 4	"context"
 5	"log"
 6	"strings"
 7	"time"
 8
 9	immudb "github.com/codenotary/immudb/pkg/client"
10)
11
12func main() {
13	opts := immudb.DefaultOptions().
14		WithAddress("localhost").
15		WithPort(3322)
16
17	client := immudb.NewClient().WithOptions(opts)
18	err := client.OpenSession(
19		context.TODO(),
20		[]byte(`immudb`),
21		[]byte(`immudb`),
22		"defaultdb",
23	)
24	if err != nil {
25		log.Fatal(err)
26	}
27
28	defer client.CloseSession(context.TODO())
29
30	_, err = client.ExpirableSet(
31		context.TODO(),
32		[]byte("expirableKey"),
33		[]byte("expirableValue"),
34		time.Now(),
35	)
36	if err != nil {
37		log.Fatal(err)
38	}
39
40	// the following will raise an error with key not found
41	_, err = client.Get(
42		context.TODO(),
43		[]byte("expirableKey"),
44	)
45	if err == nil || !strings.Contains(err.Error(), "key not found") {
46		log.Fatalf("expecting key not found error: %v", err)
47	}
48}

1
2var client = new ImmuClient();
3await client.Open("immudb", "immudb", "defaultdb");
4
5await client.ExpirableSet("key1", "value1", DateTime.Now.AddDays(1));
6
7Entry entry = await client.VerifiedGet("key1");
8Console.WriteLine(entry.ToString());
9await client.Close();

 1from immudb import ImmudbClient
 2from datetime import datetime, timedelta
 3import time
 4
 5URL = "localhost:3322"  # immudb running on your machine
 6LOGIN = "immudb"        # Default username
 7PASSWORD = "immudb"     # Default password
 8DB = b"defaultdb"       # Default database name (must be in bytes)
 9
10def main():
11    client = ImmudbClient(URL)
12    client.login(LOGIN, PASSWORD, database = DB)
13    client.expireableSet(b"TEST", b"test", datetime.now() + timedelta(seconds=3))
14    print(client.get(b"TEST")) # b"test"
15    time.sleep(4)
16    try:
17        print(client.get(b"TEST"))
18    except:
19        pass # Key not found, because it expires, raises Exception
20
21if __name__ == "__main__":
22    main()