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diff --git a/subversion/include/svn_cache_config.h b/subversion/include/svn_cache_config.h
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+/**
+ * @copyright
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ * @endcopyright
+ *
+ * @file svn_cache_config.h
+ * @brief Configuration interface to internal Subversion caches.
+ */
+
+#ifndef SVN_CACHE_CONFIG_H
+#define SVN_CACHE_CONFIG_H
+
+#include <apr.h>
+#include "svn_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @defgroup svn_fs_cache_config caching configuration
+ * @{
+ * @since New in 1.7. */
+
+/** Cache resource settings. It controls what caches, in what size and
+   how they will be created. The settings apply for the whole process.
+
+   @since New in 1.7.
+ */
+typedef struct svn_cache_config_t
+{
+  /** total cache size in bytes. Please note that this is only soft limit
+     to the total application memory usage and will be exceeded due to
+     temporary objects and other program state.
+     May be 0, resulting in default caching code being used. */
+  apr_uint64_t cache_size;
+
+  /** maximum number of files kept open */
+  apr_size_t file_handle_count;
+
+  /** is this application guaranteed to be single-threaded? */
+  svn_boolean_t single_threaded;
+} svn_cache_config_t;
+
+/** Get the current cache configuration. If it has not been set,
+   this function will return the default settings.
+
+   @since New in 1.7.
+ */
+const svn_cache_config_t *
+svn_cache_config_get(void);
+
+/** Set the cache configuration. Please note that it may not change
+   the actual configuration *in use*. Therefore, call it before reading
+   data from any repo and call it only once.
+
+   This function is not thread-safe. Therefore, it should be called
+   from the processes' initialization code only.
+
+   @since New in 1.7.
+ */
+void
+svn_cache_config_set(const svn_cache_config_t *settings);
+
+/** @} */
+
+/** @} */
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* SVN_CACHE_CONFIG_H */