LLM Failover Cooldown Manager (completions/bifrostCooldown.ts)

Manages failure cooldown timers for LLM routing endpoints. Use to temporarily route traffic away from failing backends.

// Source: https://github.com/DLinacre/OmniRoute-LLM | License: MIT | Copyright 2026 diegosouzapw
// Provided via justclaw.it.com; keep this notice with the code.
interface CooldownEntry {
  until: number;
  reason: string;
}

const cooldowns = new Map<string, CooldownEntry>();

export interface ActiveBifrostCooldown {
  remainingMs: number;
  reason: string;
}

export function getBifrostFailureCooldownMs(env: NodeJS.ProcessEnv = process.env): number {
  const parsed = Number.parseInt(env.OMNIROUTE_BIFROST_FAILURE_COOLDOWN_MS || "", 10);
  return Number.isFinite(parsed) && parsed >= 0 ? parsed : 5000;
}

export function getActiveBifrostCooldown(
  baseUrl: string,
  now = Date.now()
): ActiveBifrostCooldown | null {
  const entry = cooldowns.get(baseUrl);
  if (!entry) return null;
  if (e

... (truncated -- full source via MCP)