xixu-me
5017e7d011
Replaced occurrences of 'application' with 'app' in code comments and documentation for consistency and brevity. Updated both English and Chinese README files to add and clarify DeepLX App usage instructions, and adjusted section order for better clarity.
84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
/**
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* Configuration constants for the DeepLX app
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* Centralizes all configuration values for easy maintenance and consistency
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*/
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/**
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* Request timeout configurations
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*/
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export const REQUEST_TIMEOUT = 10000; // 10 seconds for single requests
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/**
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* Retry mechanism configuration
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*/
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export const DEFAULT_RETRY_CONFIG = {
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maxRetries: 3,
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initialDelay: 1000, // 1 second initial delay
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backoffFactor: 2, // Exponential backoff multiplier
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};
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/**
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* Rate limiting configuration for client and proxy limits
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* Based on DeepL API best practices and community feedback
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*/
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export const RATE_LIMIT_CONFIG = {
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// Base per-proxy limits
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PROXY_TOKENS_PER_SECOND: 8, // Conservative backend proxy rate limit (below 8 to prevent overload)
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PROXY_MAX_TOKENS: 16, // 2 seconds worth of burst capacity (8 * 2)
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PROXY_REFILL_RATE: 8, // Proxy token refill rate
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// Dynamic client limits (calculated based on proxy count)
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BASE_TOKENS_PER_MINUTE: 480, // Fallback when no proxies available
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};
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/**
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* Cache system configuration
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*/
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export const CACHE_CONFIG = {
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TTL: 3600, // 1 hour cache time-to-live
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MEMORY_CACHE_SIZE: 1000, // Maximum items in memory cache
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};
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/**
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* Payload size limits configuration
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*/
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export const PAYLOAD_LIMITS = {
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MAX_TEXT_LENGTH: 5000, // Maximum length of text allowed for a single request
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MAX_REQUEST_SIZE: 32768, // Maximum size of a request payload in bytes
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PROXY_MAX_TEXT_LENGTH: 3000, // Maximum text length allowed per proxy request
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CHUNK_SIZE: 2000, // Size of text chunks for splitting large requests
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};
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/**
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* Error handling and logging configuration
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*/
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export const ERROR_CONFIG = {
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LOG_SENSITIVE_DATA: false, // Never log sensitive information in production
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INCLUDE_STACK_TRACES: false, // Include stack traces in error responses (for debugging)
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};
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/**
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* Calculate dynamic rate limits based on available proxy endpoints
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* Per-client limit = number of proxies × per-proxy limit × 60 (to convert to per-minute)
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* @param proxyCount - Number of available proxy endpoints
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* @returns Object containing calculated rate limits
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*/
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export function calculateDynamicRateLimits(proxyCount: number) {
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// If no proxies available, use base limit
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if (proxyCount === 0) {
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return {
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TOKENS_PER_MINUTE: RATE_LIMIT_CONFIG.BASE_TOKENS_PER_MINUTE,
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REFILL_RATE: RATE_LIMIT_CONFIG.BASE_TOKENS_PER_MINUTE / 60,
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};
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}
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// Calculate based on proxy capacity: proxies × tokens/sec × 60 sec/min
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const tokensPerMinute =
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proxyCount * RATE_LIMIT_CONFIG.PROXY_TOKENS_PER_SECOND * 60;
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return {
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TOKENS_PER_MINUTE: tokensPerMinute,
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REFILL_RATE: tokensPerMinute / 60, // Convert to tokens per second
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};
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}
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