diff --git a/cps/xb.py b/cps/xb.py
new file mode 100644
index 0000000000..f86724b4b7
--- /dev/null
+++ b/cps/xb.py
@@ -0,0 +1,160 @@
+from sqlalchemy import (
+    create_engine, Column, Integer, Text, ForeignKey, Index, exc
+)
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import relationship, scoped_session, sessionmaker
+from sqlalchemy.pool import StaticPool
+from . import logger
+from .constants import XKLB_DB_FILE
+
+log = logger.create()
+
+Base = declarative_base()
+
+class Media(Base):
+    __tablename__ = 'media'
+    __table_args__ = (
+        Index('idx_media_id', 'id'),
+        Index('idx_media_time_deleted', 'time_deleted'),
+        Index('idx_media_playlists_id', 'playlists_id'),
+        Index('idx_media_size', 'size'),
+        Index('idx_media_duration', 'duration'),
+        Index('idx_media_time_created', 'time_created'),
+        Index('idx_media_time_modified', 'time_modified'),
+        Index('idx_media_time_downloaded', 'time_downloaded'),
+        Index('idx_media_fps', 'fps'),
+        Index('idx_media_view_count', 'view_count'),
+        Index('idx_media_uploader', 'uploader'),
+        Index('idx_media_path', 'path', unique=True),
+    )
+
+    id = Column(Integer, primary_key=True)
+    time_deleted = Column(Integer)
+    playlists_id = Column(Integer)
+    size = Column(Integer)
+    duration = Column(Integer)
+    time_created = Column(Integer)
+    time_modified = Column(Integer)
+    time_downloaded = Column(Integer)
+    fps = Column(Integer)
+    view_count = Column(Integer)
+    path = Column(Text)
+    webpath = Column(Text)
+    extractor_id = Column(Text)
+    title = Column(Text)
+    uploader = Column(Text)
+    time_uploaded = Column(Integer)
+    width = Column(Integer)
+    height = Column(Integer)
+    live_status = Column(Text)
+    type = Column(Text)
+    video_codecs = Column(Text)
+    audio_codecs = Column(Text)
+    subtitle_codecs = Column(Text)
+    other_codecs = Column(Text)
+    video_count = Column(Integer)
+    audio_count = Column(Integer)
+    chapter_count = Column(Integer)
+    other_count = Column(Integer)
+    language = Column(Text)
+    subtitle_count = Column(Integer)
+    download_attempts = Column(Integer)
+    error = Column(Text)
+
+    captions = relationship("Caption", back_populates="media")
+
+    def __repr__(self):
+        return f"<Media(title='{self.title}', path='{self.path}')>"
+
+class Caption(Base):
+    __tablename__ = 'captions'
+    __table_args__ = (
+        Index('idx_captions_media_id', 'media_id'),
+        Index('idx_captions_time', 'time'),
+    )
+
+    media_id = Column(Integer, ForeignKey('media.id'), primary_key=True)
+    time = Column(Integer, primary_key=True)
+    text = Column(Text)
+
+    media = relationship("Media", back_populates="captions")
+
+    def __repr__(self):
+        return f"<Caption(media_id={self.media_id}, time={self.time}, text={self.text})>"
+
+class Playlists(Base):
+    __tablename__ = 'playlists'
+    __table_args__ = (
+        Index('idx_playlists_id', 'id'),
+        Index('idx_playlists_time_modified', 'time_modified'),
+        Index('idx_playlists_time_deleted', 'time_deleted'),
+        Index('idx_playlists_time_created', 'time_created'),
+        Index('idx_playlists_hours_update_delay', 'hours_update_delay'),
+        Index('idx_playlists_uploader', 'uploader'),
+        Index('idx_playlists_extractor_config', 'extractor_config'),
+        Index('idx_playlists_profile', 'profile'),
+        Index('idx_playlists_path', 'path', unique=True),
+        Index('idx_playlists_extractor_key', 'extractor_key'),
+    )
+
+    id = Column(Integer, primary_key=True)
+    time_modified = Column(Integer)
+    time_deleted = Column(Integer)
+    time_created = Column(Integer)
+    hours_update_delay = Column(Integer)
+    path = Column(Text)
+    extractor_key = Column(Text)
+    profile = Column(Text)
+    extractor_config = Column(Text)
+    extractor_playlist_id = Column(Text)
+    title = Column(Text)
+    uploader = Column(Text)
+
+    def __repr__(self):
+        return f"<Playlists(title='{self.title}', path='{self.path}')>"
+
+class XKLBDB:
+    _instance = None
+
+    def __new__(cls, XKLB_DB_FILE=XKLB_DB_FILE):
+        if cls._instance is None:
+            cls._instance = super(XKLBDB, cls).__new__(cls)
+            cls._instance.XKLB_DB_FILE = XKLB_DB_FILE
+            cls._instance._init_engine()
+            cls._instance._init_session_factory()
+            cls._instance.session = cls._instance.SessionFactory()
+            log.info("XKLBDB instance created with database file: %s", cls._instance.XKLB_DB_FILE)
+        return cls._instance
+
+    def _init_engine(self):
+        self.engine = create_engine(
+            f'sqlite:///{XKLB_DB_FILE}',
+            echo=True,
+            connect_args={'check_same_thread': False},
+            poolclass=StaticPool
+        )
+
+    def _init_session_factory(self):
+        self.SessionFactory = scoped_session(sessionmaker(bind=self.engine, autocommit=False, autoflush=True))
+        self.session = self.SessionFactory()
+
+    def get_session(self):
+        return self.session
+
+    def session_commit(self, success=None):
+        try:
+            self.session.commit()
+            if success:
+                log.info(success)
+        except (exc.OperationalError, exc.InvalidRequestError) as e:
+            self.session.rollback()
+            log.error(f"Commit failed: {e}")
+
+    def dispose(self):
+        if self.session:
+            self.session.close()
+            self.SessionFactory.remove()
+        if self.engine:
+            self.engine.dispose()
+        XKLBDB._instance = None
+        log.info("XKLBDB instance disposed.")