Rename CACHING_EXPIRE_AFTER into CACHE_EXPIRE_AFTER, add CACHE_BACKEND

.env.example

@@ -26,4 +26,8 @@ CONFIG=config.example.yaml
 # BROWSERLESS_API_TOKEN="XXX"
 
 # Number of minutes to cache downloaded schemas
-# CACHING_EXPIRE_AFTER=0
\ No newline at end of file
+# CACHE_EXPIRE_AFTER=0
+#
+# Cache backend (default 'sqlite')
+# See https://requests-cache.readthedocs.io/en/latest/user_guide.html#persistence
+# CACHE_BACKEND="sqlite"
\ No newline at end of file

validata_ui/__init__.py

@@ -45,9 +45,11 @@ class SchemaCatalogRegistry:
         return opendataschema.SchemaCatalog(ref, session=self.session)
 
 
-expire_after = timedelta(minutes=config.CACHING_EXPIRE_AFTER)
+expire_after = timedelta(minutes=config.CACHE_EXPIRE_AFTER)
 caching_session = requests_cache.CachedSession(
-    backend="sqlite", cache_name="validata_ui_cache", expire_after=expire_after
+    backend=config.CACHE_BACKEND,
+    cache_name="validata_ui_cache",
+    expire_after=expire_after,
 )
 fetch_schema = generate_schema_from_url_func(caching_session)
 

validata_ui/config.py

@@ -85,17 +85,21 @@ SENTRY_DSN = os.environ.get("SENTRY_DSN")
 BROWSERLESS_API_URL = os.getenv("BROWSERLESS_API_URL") or None
 BROWSERLESS_API_TOKEN = os.getenv("BROWSERLESS_API_TOKEN") or None
 
+# Cache backend (default is SQLite)
+CACHE_BACKEND = os.getenv("CACHE_BACKEND") or "sqlite"
+log.info(f"Cache backend: {CACHE_BACKEND}")
+
 # Caching time for schema requests in minutes
-CACHING_EXPIRE_AFTER = os.getenv("CACHING_EXPIRE_AFTER") or None
-if CACHING_EXPIRE_AFTER is None:
+CACHE_EXPIRE_AFTER = os.getenv("CACHE_EXPIRE_AFTER") or None
+if CACHE_EXPIRE_AFTER is None:
     log.info(
-        "CACHING_EXPIRE_AFTER environment variable not set, using default 0 (no cache)"
+        "CACHE_EXPIRE_AFTER environment variable not set, using default 0 (no cache)"
     )
-    CACHING_EXPIRE_AFTER = "0"
+    CACHE_EXPIRE_AFTER = "0"
 try:
-    CACHING_EXPIRE_AFTER = int(CACHING_EXPIRE_AFTER)
-    log.info("Caching is set to %sm", CACHING_EXPIRE_AFTER)
+    CACHE_EXPIRE_AFTER = int(CACHE_EXPIRE_AFTER)
+    log.info("Cache timeout set to %sm", CACHE_EXPIRE_AFTER)
 except ValueError as exc:
     raise ValueError(
-        f"Invalid number of minutes for caching: {CACHING_EXPIRE_AFTER}"
+        f"Invalid number of minutes for caching: {CACHE_EXPIRE_AFTER}"
     ) from exc