Graham McIntire
226a53bf61
This commit introduces a dual-mode caching and rate limiting system that can use either Redis (for distributed deployments) or ETS/Cachex (for single-node setups). Key changes: - Add Cache abstraction layer that automatically switches between Redis and Cachex - Implement RedisCache module with full distributed cache functionality - Implement RedisRateLimiter with sliding window algorithm for accurate rate limiting - Add RateLimiterWrapper to provide unified API for both implementations - Update application startup to conditionally use Redis when REDIS_URL is set - Migrate all cache operations to use the new Cache abstraction - Support graceful fallback to ETS-based solutions when Redis is unavailable The system automatically detects Redis availability via REDIS_URL environment variable and switches between implementations without code changes. This enables proper distributed caching and rate limiting in Kubernetes deployments while maintaining backward compatibility for development environments. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
46 lines
1,023 B
Elixir
46 lines
1,023 B
Elixir
defmodule Aprsme.RateLimiterWrapper do
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@moduledoc """
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Wrapper that provides the same API for both Hammer and RedisRateLimiter
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"""
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@doc """
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Check rate limit - compatible with Hammer.hit/3 API
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"""
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def hit(bucket, scale_ms, limit) do
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if using_redis?() do
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Aprsme.RedisRateLimiter.check_rate(bucket, limit, scale_ms)
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else
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Aprsme.RateLimiter.hit(bucket, scale_ms, limit)
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end
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end
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@doc """
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Reset rate limit for a bucket
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"""
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def reset(bucket) do
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if using_redis?() do
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Aprsme.RedisRateLimiter.reset(bucket)
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else
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# Hammer doesn't provide a reset function
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# Best we can do is return ok
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:ok
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end
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end
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@doc """
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Get current count for a bucket
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"""
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def count(bucket, scale_ms) do
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if using_redis?() do
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Aprsme.RedisRateLimiter.count(bucket, scale_ms)
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else
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# Hammer doesn't provide a count function
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# Return 0 as default
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{:ok, 0}
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end
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end
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defp using_redis? do
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System.get_env("REDIS_URL") != nil
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end
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end
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