server: use postgres instead of scylla, easier to host

server/db/postgres.go

@@ -0,0 +1,27 @@
+package db
+
+import (
+	"context"
+	"log/slog"
+	"os"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+var Pool *pgxpool.Pool
+
+func InitPostgres(ctx context.Context) {
+	pool, err := pgxpool.New(ctx, os.Getenv("DATABASE_URL"))
+	if err != nil {
+		slog.Error("Failed to connect to Postgres", "error", err)
+		os.Exit(1)
+	}
+	Pool = pool
+	slog.Info("Connected to Postgres")
+}
+
+func ClosePostgres() {
+	if Pool != nil {
+		Pool.Close()
+	}
+}

server/db/scylla.go

@@ -1,31 +0,0 @@
-package db
-
-import (
-	"log/slog"
-	"os"
-
-	"github.com/gocql/gocql"
-)
-
-var Session *gocql.Session
-
-func InitScyllaDB() {
-	cluster := gocql.NewCluster(os.Getenv("SCYLLA_CLUSTER"))
-	cluster.Keyspace = os.Getenv("SCYLLA_KEYSPACE")
-
-	cluster.Consistency = gocql.Quorum
-
-	session, err := cluster.CreateSession()
-	if err != nil {
-		slog.Error("Failed to connect to ScyllaDB", "error", err)
-		os.Exit(1)
-	}
-	Session = session
-	slog.Info("Connected to ScyllaDB")
-}
-
-func CloseScyllaDB() {
-	if Session != nil {
-		Session.Close()
-	}
-}