diff --git a/go.mod b/go.mod
index 42a3855..ad1039b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,38 +1,50 @@
 module github.com/ihexxa/quickshare
 
-go 1.16
+go 1.18
 
 require (
 	github.com/boltdb/bolt v1.3.1
 	github.com/dchest/captcha v0.0.0-20200903113550-03f5f0333e1f
-	github.com/elazarl/goproxy v0.0.0-20201021153353-00ad82a08272 // indirect
 	github.com/gin-contrib/static v0.0.0-20200916080430-d45d9a37d28e
 	github.com/gin-gonic/gin v1.7.3
-	github.com/go-playground/validator/v10 v10.9.0 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/ihexxa/fsearch v0.1.2 // indirect
+	github.com/ihexxa/fsearch v0.1.2
 	github.com/ihexxa/gocfg v0.0.1
 	github.com/ihexxa/multipart v0.0.0-20210916083128-8584a3f00d1d
-	github.com/ihexxa/q-radix/v3 v3.0.5
-	github.com/ihexxa/randstr v0.3.0 // indirect
+	github.com/ihexxa/randstr v0.3.0
 	github.com/jessevdk/go-flags v1.4.0
+	github.com/mattn/go-sqlite3 v1.14.15
+	github.com/natefinch/lumberjack v2.0.0+incompatible
+	github.com/parnurzeal/gorequest v0.2.16
+	github.com/robbert229/jwt v2.0.0+incompatible
+	github.com/robfig/cron/v3 v3.0.1
+	go.uber.org/zap v1.16.0
+	golang.org/x/crypto v0.0.0-20210812204632-0ba0e8f03122
+)
+
+require (
+	github.com/elazarl/goproxy v0.0.0-20201021153353-00ad82a08272 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.9.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/ihexxa/q-radix/v3 v3.0.5 // indirect
 	github.com/json-iterator/go v1.1.11 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/mattn/go-isatty v0.0.13 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
-	github.com/natefinch/lumberjack v2.0.0+incompatible
-	github.com/parnurzeal/gorequest v0.2.16
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/robbert229/jwt v2.0.0+incompatible
-	github.com/robfig/cron/v3 v3.0.1
 	github.com/smartystreets/goconvey v1.6.4 // indirect
-	github.com/ugorji/go v1.2.6 // indirect
-	go.uber.org/zap v1.16.0
-	golang.org/x/crypto v0.0.0-20210812204632-0ba0e8f03122
+	github.com/ugorji/go/codec v1.2.6 // indirect
+	go.uber.org/atomic v1.6.0 // indirect
+	go.uber.org/multierr v1.5.0 // indirect
+	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
 	golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e // indirect
 	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	moul.io/http2curl v1.0.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 14be1b3..7c12a4e 100644
--- a/go.sum
+++ b/go.sum
@@ -49,8 +49,6 @@ github.com/ihexxa/gocfg v0.0.1 h1:3zsCHY/SYdqKSoo3pwTBWMgivEB7/ctpPPHL3p43UBg=
 github.com/ihexxa/gocfg v0.0.1/go.mod h1:oqDTq1ywx4Qi9DdhFwwMHoPCYv6Txrfj2SY5WWcgiJs=
 github.com/ihexxa/multipart v0.0.0-20210916083128-8584a3f00d1d h1:+v33khYHVDPEuuWO/JE1IzhoIu5uNvEcSs5GmXc5Sjw=
 github.com/ihexxa/multipart v0.0.0-20210916083128-8584a3f00d1d/go.mod h1:rhOAe/52S/J1fq1VnXvKX8FHuo65I+IcYUozW4M7+wE=
-github.com/ihexxa/q-radix/v3 v3.0.4 h1:Hk+Av57Q+fwFtHobd5uQjOFdY/V31nl4p+K4mO3crDg=
-github.com/ihexxa/q-radix/v3 v3.0.4/go.mod h1:DYXQuLlICQ2pCdPQOzyovzSPq0P8sKwxv5HhVQAwSVQ=
 github.com/ihexxa/q-radix/v3 v3.0.5 h1:dF3+NOZXSK3dSL/46BS5JC/gBe4kw7qiKITRPppo+rQ=
 github.com/ihexxa/q-radix/v3 v3.0.5/go.mod h1:DYXQuLlICQ2pCdPQOzyovzSPq0P8sKwxv5HhVQAwSVQ=
 github.com/ihexxa/randstr v0.3.0 h1:rXG67TwC2g71eSjMvXX1RauWc32wkZrdf6OOSIfun80=
@@ -80,6 +78,8 @@ github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2y
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mattn/go-isatty v0.0.13 h1:qdl+GuBjcsKKDco5BsxPJlId98mSWNKqYA+Co0SC1yA=
 github.com/mattn/go-isatty v0.0.13/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
+github.com/mattn/go-sqlite3 v1.14.15 h1:vfoHhTN1af61xCRSWzFIWzx2YskyMTwHLrExkBOjvxI=
+github.com/mattn/go-sqlite3 v1.14.15/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -116,7 +116,6 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/ugorji/go v1.1.7/go.mod h1:kZn38zHttfInRq0xu/PH0az30d+z6vm202qpg1oXVMw=
-github.com/ugorji/go v1.2.6 h1:tGiWC9HENWE2tqYycIqFTNorMmFRVhNwCpDOpWqnk8E=
 github.com/ugorji/go v1.2.6/go.mod h1:anCg0y61KIhDlPZmnH+so+RQbysYVyDko0IMgJv0Nn0=
 github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=
 github.com/ugorji/go/codec v1.2.6 h1:7kbGefxLoDBuYXOms4yD7223OpNMMPNPZxXk5TvFcyQ=
diff --git a/src/db/rdb/interface.go b/src/db/rdb/interface.go
new file mode 100644
index 0000000..63793cd
--- /dev/null
+++ b/src/db/rdb/interface.go
@@ -0,0 +1,25 @@
+package rdb
+
+import (
+	"context"
+	"database/sql"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+// TODO: expose more APIs if needed
+type IDB interface {
+	BeginTx(ctx context.Context, opts *sql.TxOptions) (*sql.Tx, error)
+	Close() error
+	PingContext(ctx context.Context) error
+	PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
+	ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error)
+	QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
+	QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
+	// Conn(ctx context.Context) (*Conn, error)
+	// Driver() driver.Driver
+	// SetConnMaxIdleTime(d time.Duration)
+	// SetConnMaxLifetime(d time.Duration)
+	// SetMaxIdleConns(n int)
+	// SetMaxOpenConns(n int)
+	// Stats() DBStats
+}
diff --git a/src/db/rdb/sqlite/sqlite.go b/src/db/rdb/sqlite/sqlite.go
new file mode 100644
index 0000000..4175461
--- /dev/null
+++ b/src/db/rdb/sqlite/sqlite.go
@@ -0,0 +1,25 @@
+package sqlite
+
+import (
+	"database/sql"
+	_ "github.com/mattn/go-sqlite3"
+
+	"github.com/ihexxa/quickshare/src/db/rdb"
+)
+
+type SQLite struct {
+	rdb.IDB
+	dbPath string
+}
+
+func NewSQLite(dbPath string) (*SQLite, error) {
+	db, err := sql.Open("sqlite3", dbPath)
+	if err != nil {
+		return nil, err
+	}
+
+	return &SQLite{
+		IDB:    db,
+		dbPath: dbPath,
+	}, nil
+}
diff --git a/src/depidx/deps.go b/src/depidx/deps.go
index b2a14ff..cdc663a 100644
--- a/src/depidx/deps.go
+++ b/src/depidx/deps.go
@@ -8,6 +8,7 @@ import (
 	"github.com/ihexxa/quickshare/src/cryptoutil"
 	"github.com/ihexxa/quickshare/src/db/boltstore"
 	"github.com/ihexxa/quickshare/src/db/fileinfostore"
+	"github.com/ihexxa/quickshare/src/db/rdb"
 	"github.com/ihexxa/quickshare/src/db/sitestore"
 	"github.com/ihexxa/quickshare/src/db/userstore"
 	"github.com/ihexxa/quickshare/src/fs"
@@ -40,6 +41,7 @@ type Deps struct {
 	boltStore *boltstore.BoltStore
 	cron      cron.ICron
 	fileIndex fileindex.IFileIndex
+	db        rdb.IDB
 }
 
 func NewDeps(cfg gocfg.ICfg) *Deps {
@@ -146,6 +148,14 @@ func (deps *Deps) FileIndex() fileindex.IFileIndex {
 	return deps.fileIndex
 }
 
-func (deps *Deps) SetIFileIndex(index fileindex.IFileIndex) {
+func (deps *Deps) SetFileIndex(index fileindex.IFileIndex) {
 	deps.fileIndex = index
 }
+
+func (deps *Deps) DB() rdb.IDB {
+	return deps.db
+}
+
+func (deps *Deps) SetDB(db rdb.IDB) {
+	deps.db = db
+}
diff --git a/src/server/server.go b/src/server/server.go
index 1a10364..cc023db 100644
--- a/src/server/server.go
+++ b/src/server/server.go
@@ -242,7 +242,7 @@ func initDeps(cfg gocfg.ICfg) *depidx.Deps {
 			logger.Infof("failed to reindex file index: %s", err)
 		}
 	}
-	deps.SetIFileIndex(fileIndex)
+	deps.SetFileIndex(fileIndex)
 
 	return deps
 }