# retry URL: /api/utils/retry/ Section: utils -------------------------------------------------------------------------------- retry - Bengal window.BENGAL_THEME_DEFAULTS = { appearance: 'dark', palette: 'snow-lynx' }; // Progressive Enhancement System Configuration window.Bengal = window.Bengal || {}; window.Bengal.enhanceBaseUrl = '/bengal/assets/js/enhancements'; window.Bengal.watchDom = true; window.Bengal.debug = false; (function () { try { var defaults = window.BENGAL_THEME_DEFAULTS || { appearance: 'system', palette: '' }; var defaultAppearance = defaults.appearance; if (defaultAppearance === 'system') { defaultAppearance = (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) ? 'dark' : 'light'; } var storedTheme = localStorage.getItem('bengal-theme'); var storedPalette = localStorage.getItem('bengal-palette'); var theme = storedTheme ? (storedTheme === 'system' ? defaultAppearance : storedTheme) : defaultAppearance; var palette = storedPalette ?? defaults.palette; document.documentElement.setAttribute('data-theme', theme); if (palette) { document.documentElement.setAttribute('data-palette', palette); } } catch (e) { document.documentElement.setAttribute('data-theme', 'light'); } })(); Skip to main content Magnifying Glass ESC Recent Clear Magnifying Glass No results for "" Try different keywords or check your spelling Start typing to search... ↑↓ Navigate ↵ Open ESC Close Powered by Lunr ᓚᘏᗢ Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Magnifying Glass Search ⌘K Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal List ᓚᘏᗢ Magnifying Glass Search X Close Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal API Reference __main__ bengal Caret Right Folder Analysis community_detection graph_analysis graph_reporting graph_visualizer knowledge_graph link_suggestions link_types page_rank path_analysis performance_advisor results Caret Right Folder Assets manifest pipeline Caret Right Folder Autodoc base config docstring_parser utils virtual_orchestrator Caret Right Folder Extractors cli openapi python Caret Right Folder Models cli common openapi python Caret Right Folder Cache asset_dependency_map cache_store cacheable compression dependency_tracker page_discovery_cache query_index query_index_registry taxonomy_index utils Caret Right 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Provides both synchronous and asynchronous retry decorators and functions with configurable backoff strategies and jitter. Example: from bengal.utils.retry import retry_with_backoff, calculate_backoff # Retry function with backoff result = retry_with_backoff( fetch_data, retries=3, base_delay=0.5, exceptions=(ConnectionError, TimeoutError), ) # Calculate backoff for custom retry loop delay = calculate_backoff(attempt=2, base=0.5, max_delay=10.0) Related Modules: bengal.health.linkcheck.async_checker: Uses for HTTP retry bengal.utils.file_lock: Uses for lock acquisition retry View source 3 Functions Functions calculate_backoff Calculate exponential backoff delay with optional jitter. Uses formula: base * (2 ^ attempt) with … 4 float Caret Right def calculate_backoff(attempt: int, base: float = 0.5, max_delay: float = 10.0, jitter: bool = True) -> float Calculate exponential backoff delay with optional jitter. Uses formula: base * (2 ^ attempt) with ±25% jitter. Parameters 4 Name Type Default Description attempt int — Current attempt number (0-indexed) base float 0.5 Base delay in seconds max_delay float 10.0 Maximum delay cap jitter bool True Add random jitter to prevent thundering herd Returns float — Delay in seconds retry_with_backoff Execute function with retry and exponential backoff. 7 T Caret Right def retry_with_backoff(func: Callable[[], T], retries: int = 3, base_delay: float = 0.5, max_delay: float = 10.0, jitter: bool = True, exceptions: tuple[type[Exception], ...] = (Exception,), on_retry: Callable[[int, Exception], None] | None = None) -> T Execute function with retry and exponential backoff. Parameters 7 Name Type Default Description func Callable[[], T] — Function to execute (no arguments) retries int 3 Maximum retry attempts base_delay float 0.5 Base delay between retries max_delay float 10.0 Maximum delay cap jitter bool True Add jitter to prevent thundering herd exceptions tuple[type[Exception], ...] (Exception,) Exception types to catch and retry on_retry Callable[[int, Exception], None] | None None Optional callback(attempt, exception) on each retry Returns T — Result of successful function call async_retry_with_backoff async Execute async function with retry and exponential backoff. 7 T Caret Right async def async_retry_with_backoff(coro_func: Callable[[], Awaitable[T]], retries: int = 3, base_delay: float = 0.5, max_delay: float = 10.0, jitter: bool = True, exceptions: tuple[type[Exception], ...] = (Exception,), on_retry: Callable[[int, Exception], None] | None = None) -> T Execute async function with retry and exponential backoff. Parameters 7 Name Type Default Description coro_func Callable[[], Awaitable[T]] — Async function to execute (no arguments, returns awaitable) retries int 3 Maximum retry attempts base_delay float 0.5 Base delay between retries max_delay float 10.0 Maximum delay cap jitter bool True Add jitter to prevent thundering herd exceptions tuple[type[Exception], ...] (Exception,) Exception types to catch and retry on_retry Callable[[int, Exception], None] | None None Optional callback(attempt, exception) on each retry Returns T — Result of successful coroutine ← Previous progress Next → rich_console List © 2025 Bengal ᓚᘏᗢ window.BENGAL_LAZY_ASSETS = { tabulator: '/bengal/assets/js/tabulator.min.js', dataTable: '/bengal/assets/js/data-table.js', mermaidToolbar: '/bengal/assets/js/mermaid-toolbar.9de5abba.js', mermaidTheme: '/bengal/assets/js/mermaid-theme.344822c5.js', graphMinimap: '/bengal/assets/js/graph-minimap.cc7e42e3.js', graphContextual: '/bengal/assets/js/graph-contextual.440e59c6.js' }; window.BENGAL_ICONS = { close: '/bengal/assets/icons/close.911d4fe1.svg', enlarge: '/bengal/assets/icons/enlarge.652035e5.svg', copy: '/bengal/assets/icons/copy.3d56e945.svg', 'download-svg': '/bengal/assets/icons/download.04f07e1b.svg', 'download-png': '/bengal/assets/icons/image.c34dfd40.svg', 'zoom-in': '/bengal/assets/icons/zoom-in.237b4a83.svg', 'zoom-out': '/bengal/assets/icons/zoom-out.38857c77.svg', reset: '/bengal/assets/icons/reset.d26dba29.svg' }; Arrow Up X -------------------------------------------------------------------------------- Metadata: - Author: lbliii - Word Count: 1349 - Reading Time: 7 minutes