invalidate_cache
Clear cached Taiwan stock market data to retrieve updated information for accurate analysis and decision-making.
Instructions
Invalidate resource cache for fresh data
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| resource_pattern | No |
Implementation Reference
- mcp_server.py:307-337 (handler)MCP tool handler for 'invalidate_cache' that delegates to resource_manager.invalidate_cache and formats the response with cache statistics.
@mcp.tool(name="invalidate_cache", description="Invalidate resource cache for fresh data") async def invalidate_cache_tool(resource_pattern: Optional[str] = None) -> Dict[str, Any]: """Invalidate resource cache.""" try: invalidated_count = resource_manager.invalidate_cache(resource_pattern) cache_stats = resource_manager.get_cache_stats() return { "pattern": resource_pattern or "all", "invalidated_entries": invalidated_count, "cache_statistics": cache_stats, "_metadata": { "source": "tw-stock-agent", "timestamp": datetime.now().isoformat(), "data_type": "cache_management" } } except Exception as e: logger.error(f"Failed to invalidate cache: {e}") return { "pattern": resource_pattern or "all", "invalidated_entries": 0, "error": str(e), "_metadata": { "source": "tw-stock-agent", "timestamp": datetime.now().isoformat(), "data_type": "cache_management", "has_error": True } } - Core implementation of cache invalidation in ResourceManager class, clearing all or pattern-matched cache entries.
def invalidate_cache(self, resource_pattern: Optional[str] = None) -> int: """ Invalidate cached resources. Args: resource_pattern: Optional pattern to match specific resources Returns: Number of cache entries invalidated """ if resource_pattern is None: # Clear entire cache count = len(self.cache) self.cache.clear() logger.info(f"Invalidated entire resource cache ({count} entries)") return count else: # Clear matching entries keys_to_remove = [ key for key in self.cache.keys() if resource_pattern in key ] for key in keys_to_remove: del self.cache[key] logger.info(f"Invalidated {len(keys_to_remove)} cache entries matching '{resource_pattern}'") return len(keys_to_remove)