Markus Heiser 26801e92af [fix] sqlitedb: create DB Schema (DDL) during app initialization (hardening) (#6187)
The initialization of the DB schema ("base schema") has so far been done on
demand, which causes race conditions with competing threads and processes.

The DDL statements for creating the "base schema" are now executed as part of
the initialization of the app.

Further improvements were made to harden the database applications:

- Wikidata & Radio-Browser engine perform their initialization only once (so far
  the initialization was carried out in each thread/process).

- If multiple processes try to set DB's WAL mode when opening the DB at the same
  time, this usually leads to another race condition, which is now also caught.

Related:

- https://github.com/searxng/searxng/issues/6181#issuecomment-4586705

Closes: #6181

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2026-06-10 15:48:49 +02:00
2021-06-22 20:34:39 +02:00
2025-10-17 15:42:22 +02:00
2026-03-12 16:04:00 +01:00
2026-03-12 16:04:00 +01:00
2026-02-22 14:44:21 +01:00
2022-01-25 00:56:20 +01:00
2026-02-22 14:44:21 +01:00

.. SPDX-License-Identifier: AGPL-3.0-or-later

.. _metasearch engine: https://en.wikipedia.org/wiki/Metasearch_engine
.. _Installation guide: https://docs.searxng.org/admin/installation.html
.. _Configuration guide: https://docs.searxng.org/admin/settings/index.html
.. _CONTRIBUTING: https://github.com/searxng/searxng/blob/master/CONTRIBUTING.rst
.. _LICENSE: https://github.com/searxng/searxng/blob/master/LICENSE

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   :alt: SearXNG
   :width: 512px


SearXNG is a `metasearch engine`_. Users are neither tracked nor profiled.

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   :alt: Organization

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Setup
=====

To install SearXNG, see `Installation guide`_.

To fine-tune SearXNG, see `Configuration guide`_.

Further information on *how-to* can be found `here <https://docs.searxng.org/admin/index.html>`_.

Connect
=======

If you have questions or want to connect with others in the community:

- `#searxng:matrix.org <https://matrix.to/#/#searxng:matrix.org>`_

Contributing
============

See CONTRIBUTING_ for more details.

License
=======

This project is licensed under the GNU Affero General Public License (AGPL-3.0).
See LICENSE_ for more details.
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