httk.store.backend
==================

.. py:module:: httk.store.backend

.. autoapi-nested-parse::

   Storage backends for *httk-store*.

   Each subpackage is a self-contained storage backend:

   - :mod:`httk.store.backend.sql` — the SQLAlchemy-backed relational layer
     (:class:`~httk.store.backend.sql.engine.Backend`,
     :class:`~httk.store.backend.sql.store.SqlStore`) shared by every SQL dialect;
   - :mod:`httk.store.backend.sqlite`, :mod:`httk.store.backend.duckdb`,
     :mod:`httk.store.backend.clickhouse`, :mod:`httk.store.backend.postgresql` —
     the per-dialect constructor and quirk code the SQL layer delegates to; and
   - :mod:`httk.store.backend.mongo` — the MongoDB-backed layer
     (:class:`~httk.store.backend.mongo.store.MongoStore`).

   Two backend-neutral modules sit alongside the subpackages, driver-free and
   shared by every backend:

   - :mod:`httk.store.backend.schema` — :func:`~httk.store.backend.schema.resolve_schema`
     and the schema IR that drives storage; and
   - :mod:`httk.store.backend.codecs` — the :class:`~httk.store.backend.codecs.ValueCodec`
     registry with exact, round-trippable encodings.

   Importing this package pulls in neither ``sqlalchemy`` nor ``pymongo``; the
   driver-backed names load lazily on first use of the relevant subpackage.



Submodules
----------

.. toctree::
   :maxdepth: 1

   /reference/autoapi/httk/store/backend/clickhouse/index
   /reference/autoapi/httk/store/backend/codecs/index
   /reference/autoapi/httk/store/backend/duckdb/index
   /reference/autoapi/httk/store/backend/mongo/index
   /reference/autoapi/httk/store/backend/postgresql/index
   /reference/autoapi/httk/store/backend/schema/index
   /reference/autoapi/httk/store/backend/sql/index
   /reference/autoapi/httk/store/backend/sqlite/index