@trifrost/core/esm/modules/RateLimit/strategies/Fixed.js

Blazingly fast, runtime-agnostic server framework for modern edge and node environments

export class Fixed {
    #window;
    #store;
    constructor(window = 60, store) {
        this.#window = window;
        this.#store = store;
    }
    get store() {
        return this.#store;
    }
    async consume(key, limit) {
        const now = Math.floor(Date.now() / 1000);
        const record = await this.#store.get(key);
        let amt;
        let reset;
        if (!record || record.reset <= now) {
            amt = 1;
            reset = now + this.#window;
        }
        else {
            amt = record.amt + 1;
            reset = record.reset;
        }
        /* Avoid writes if we've already exceeded the limit */
        if (amt <= limit) {
            const ttl = reset - now;
            await this.#store.set(key, { amt, reset }, { ttl: Math.max(ttl, 1) });
        }
        return { amt, reset };
    }
    async stop() {
        await this.#store.stop();
    }
}