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namespace NpgsqlRest;

public class CacheOptions

{

/// <summary>

/// Default routine cache object. Inject custom cache object to override default cache. Set to null to disable caching.

/// </summary>

public IRoutineCache? DefaultRoutineCache { get; set; } = new RoutineCache();

/// <summary>

/// When cache is enabled, this value sets the interval in minutes for cache pruning (removing expired entries). Default is 1 minute.

/// </summary>

public int MemoryCachePruneIntervalSeconds { get; set; } = 60;

/// <summary>

/// Maximum number of rows that can be cached for set-returning functions.

/// If a result set exceeds this limit, it will not be cached (but will still be returned).

/// Set to 0 to disable caching for sets entirely. Set to null for unlimited (use with caution).

/// Default is 1000 rows.

/// </summary>

public int? MaxCacheableRows { get; set; } = 1000;

/// <summary>

/// When true, cache keys longer than HashKeyThreshold characters are hashed to a fixed-length SHA256 string.

/// This reduces memory usage for long cache keys and improves Redis performance with large keys.

/// Default is false (cache keys are stored as-is).

/// </summary>

public bool UseHashedCacheKeys { get; set; } = false;

/// <summary>

/// Cache keys longer than this threshold (in characters) will be hashed when UseHashedCacheKeys is true.

/// Keys shorter than this threshold are stored as-is for better debuggability.

/// Default is 256 characters.

/// </summary>

public int HashKeyThreshold { get; set; } = 256;

/// <summary>

/// When set, creates an additional invalidation endpoint for each cached endpoint.

/// The invalidation endpoint has the same path with this suffix appended.

/// For example, if a cached endpoint is /api/my-endpoint/ and this is set to "invalidate",

/// an invalidation endpoint /api/my-endpoint/invalidate will be created.

/// Calling the invalidation endpoint with the same parameters removes the cached entry.

/// Invalidation routes through the endpoint's resolved cache (profile or root).

/// Default is null (no invalidation endpoints created).

/// </summary>

public string? InvalidateCacheSuffix { get; set; } = null;

/// <summary>

/// Optional named caching profiles. An endpoint opts into a profile via the <c>@cache_profile <name></c>

/// comment annotation; that endpoint then uses the profile's <see cref="CacheProfile.Cache"/> instance and

/// inherits the profile's <see cref="CacheProfile.Expiration"/>, <see cref="CacheProfile.Parameters"/>, and

/// <see cref="CacheProfile.When"/> defaults.

///

/// Endpoints without <c>@cache_profile</c> continue to use <see cref="DefaultRoutineCache"/>.

///

/// Unknown profile names referenced by endpoints cause startup to fail (collected and reported as a single

/// error listing every unresolved name and the offending endpoints).

///

/// Cache key prefix: entries written under a profile are prefixed with the profile name to prevent collisions

/// when two profiles share the same backend (e.g., two Memory profiles). Entries written under the default

/// (root) cache have no prefix and are wire-compatible with prior versions.

/// </summary>

public Dictionary<string, CacheProfile>? Profiles { get; set; }

}

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