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feat: add rate limiting middleware to all API endpoints (#10) #67

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Merged
prodbycorne merged 2 commits into from
Jul 20, 2026
Merged

feat: add rate limiting middleware to all API endpoints (#10) #67

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a82f730
feat: add API rate limiting
brain-marchine Jul 13, 2026
d9d6694
Merge branch 'main' into fix-10-api-rate-limiting
prodbycorne Jul 20, 2026
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214 changes: 140 additions & 74 deletions .env.example
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Original file line number Diff line number Diff line change
@@ -1,74 +1,140 @@
# Server
PORT=4000

# Redis
REDIS_HOST=redis
REDIS_PORT=6379
REDIS_PASSWORD=
REDIS_URL=redis://redis:6379

# Database
DATABASE_URL=postgres://smartdrop:smartdrop@postgres:5432/smartdrop
# Runtime environment
# NODE_ENV: string enum (development, test, production). Default: development.
NODE_ENV=development

# PORT: number. Default: 3000.
PORT=3000

# REDIS_URL: URL. Required in production. Development/test default: redis://localhost:6379.
REDIS_URL=redis://localhost:6379

# DATABASE_URL: URL. Required in production. Development default: postgres://localhost/smartdrop. Test default: postgres://localhost/smartdrop_test.
DATABASE_URL=postgres://localhost/smartdrop

# STELLAR_HORIZON_URL: URL. Default: https://horizon.stellar.org.
STELLAR_HORIZON_URL=https://horizon.stellar.org

# USDC_ISSUER: Stellar public key. Default: Stellar USDC issuer.
USDC_ISSUER=GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335AX2OBFLDTQLNUEHRGPTM6RIA

# COINGECKO_API_KEY: string. Optional. Default: empty.
COINGECKO_API_KEY=

# COINMARKETCAP_API_KEY: string. Optional. Default: empty.
COINMARKETCAP_API_KEY=

# PRICE_CACHE_TTL_SECONDS: number. Default: 60.
PRICE_CACHE_TTL_SECONDS=60

# PRICE_REFRESH_INTERVAL_SECONDS: number. Default: 30.
PRICE_REFRESH_INTERVAL_SECONDS=30

# PRICE_STALE_THRESHOLD_MINUTES: number. Default: 5.
PRICE_STALE_THRESHOLD_MINUTES=5

# PRICE_ANOMALY_THRESHOLD_PCT: number. Default: 20.
PRICE_ANOMALY_THRESHOLD_PCT=20

# AIRDROP_EXPIRY_CHECK_INTERVAL_SECONDS: number. Default: 60.
AIRDROP_EXPIRY_CHECK_INTERVAL_SECONDS=60

# AIRDROP_LEDGER_CACHE_TTL_MS: number. Default: 5000.
AIRDROP_LEDGER_CACHE_TTL_MS=5000

# AIRDROP_EXPIRY_SCAN_BATCH_SIZE: number. Default: 100.
AIRDROP_EXPIRY_SCAN_BATCH_SIZE=100

# API key auth
ADMIN_API_KEY=

# Airdrop request limits
# Maximum recipient CSV upload size in bytes. Default: 5 MiB.
AIRDROP_CSV_MAX_BYTES=5242880
# Maximum JSON request body size in bytes. Default: 2 MiB, sufficient for 10,000 recipients.
AIRDROP_JSON_MAX_BYTES=2097152
# Per-IP limits for airdrop creation and recipient additions.
AIRDROP_RATELIMIT_WINDOW=60
AIRDROP_RATELIMIT_MAX=10

# LOG_LEVEL: string enum (debug, info, warn, error). Default: info.
LOG_LEVEL=info

# CORS
CORS_ALLOWED_ORIGINS=http://localhost:4000,http://localhost:3001
# Server
PORT=4000

# Redis
REDIS_HOST=redis
REDIS_PORT=6379
REDIS_PASSWORD=
REDIS_URL=redis://redis:6379

# Database
DATABASE_URL=postgres://smartdrop:smartdrop@postgres:5432/smartdrop
# Runtime environment
# NODE_ENV: string enum (development, test, production). Default: development.
NODE_ENV=development

# PORT: number. Default: 3000.
PORT=3000

# REDIS_URL: URL. Required in production. Development/test default: redis://localhost:6379.
REDIS_URL=redis://localhost:6379

# DATABASE_URL: URL. Required in production. Development default: postgres://localhost/smartdrop. Test default: postgres://localhost/smartdrop_test.
DATABASE_URL=postgres://localhost/smartdrop

# STELLAR_HORIZON_URL: URL. Default: https://horizon.stellar.org.
STELLAR_HORIZON_URL=https://horizon.stellar.org

# USDC_ISSUER: Stellar public key. Default: Stellar USDC issuer.
USDC_ISSUER=GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335AX2OBFLDTQLNUEHRGPTM6RIA

# COINGECKO_API_KEY: string. Optional. Default: empty.
COINGECKO_API_KEY=

# COINMARKETCAP_API_KEY: string. Optional. Default: empty.
COINMARKETCAP_API_KEY=

# PRICE_CACHE_TTL_SECONDS: number. Default: 60.
PRICE_CACHE_TTL_SECONDS=60

# PRICE_REFRESH_INTERVAL_SECONDS: number. Default: 30.
PRICE_REFRESH_INTERVAL_SECONDS=30

# PRICE_STALE_THRESHOLD_MINUTES: number. Default: 5.
PRICE_STALE_THRESHOLD_MINUTES=5

# PRICE_ANOMALY_THRESHOLD_PCT: number. Default: 20.
PRICE_ANOMALY_THRESHOLD_PCT=20

# API key auth
ADMIN_API_KEY=

# LOG_LEVEL: string enum (debug, info, warn, error). Default: info.
LOG_LEVEL=info

# Rate limiting (Redis-backed, per IP)
# RATE_LIMIT_WINDOW_MS: global API window in milliseconds. Default: 60000 (1 minute).
RATE_LIMIT_WINDOW_MS=60000
# RATE_LIMIT_MAX: max requests per IP per global window. Default: 100.
RATE_LIMIT_MAX=100
# PRICE_RATELIMIT_WINDOW: price endpoint window in seconds. Default: 60.
PRICE_RATELIMIT_WINDOW=60
# PRICE_RATELIMIT_MAX: max price requests per IP per window. Default: 30.
PRICE_RATELIMIT_MAX=30

# CORS
CORS_ALLOWED_ORIGINS=http://localhost:4000,http://localhost:3001
# Server
PORT=4000

# Redis
REDIS_HOST=redis
REDIS_PORT=6379
REDIS_PASSWORD=
REDIS_URL=redis://redis:6379

# Database
DATABASE_URL=postgres://smartdrop:smartdrop@postgres:5432/smartdrop
# Runtime environment
# NODE_ENV: string enum (development, test, production). Default: development.
NODE_ENV=development

# PORT: number. Default: 3000.
PORT=3000

# REDIS_URL: URL. Required in production. Development/test default: redis://localhost:6379.
REDIS_URL=redis://localhost:6379

# DATABASE_URL: URL. Required in production. Development default: postgres://localhost/smartdrop. Test default: postgres://localhost/smartdrop_test.
DATABASE_URL=postgres://localhost/smartdrop

# STELLAR_HORIZON_URL: URL. Default: https://horizon.stellar.org.
STELLAR_HORIZON_URL=https://horizon.stellar.org

# USDC_ISSUER: Stellar public key. Default: Stellar USDC issuer.
USDC_ISSUER=GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335AX2OBFLDTQLNUEHRGPTM6RIA

# COINGECKO_API_KEY: string. Optional. Default: empty.
COINGECKO_API_KEY=

# COINMARKETCAP_API_KEY: string. Optional. Default: empty.
COINMARKETCAP_API_KEY=

# PRICE_CACHE_TTL_SECONDS: number. Default: 60.
PRICE_CACHE_TTL_SECONDS=60

# PRICE_REFRESH_INTERVAL_SECONDS: number. Default: 30.
PRICE_REFRESH_INTERVAL_SECONDS=30

# PRICE_STALE_THRESHOLD_MINUTES: number. Default: 5.
PRICE_STALE_THRESHOLD_MINUTES=5

# PRICE_ANOMALY_THRESHOLD_PCT: number. Default: 20.
PRICE_ANOMALY_THRESHOLD_PCT=20

# AIRDROP_EXPIRY_CHECK_INTERVAL_SECONDS: number. Default: 60.
AIRDROP_EXPIRY_CHECK_INTERVAL_SECONDS=60

# AIRDROP_LEDGER_CACHE_TTL_MS: number. Default: 5000.
AIRDROP_LEDGER_CACHE_TTL_MS=5000

# AIRDROP_EXPIRY_SCAN_BATCH_SIZE: number. Default: 100.
AIRDROP_EXPIRY_SCAN_BATCH_SIZE=100

# API key auth
ADMIN_API_KEY=

# Airdrop request limits
# Maximum recipient CSV upload size in bytes. Default: 5 MiB.
AIRDROP_CSV_MAX_BYTES=5242880
# Maximum JSON request body size in bytes. Default: 2 MiB, sufficient for 10,000 recipients.
AIRDROP_JSON_MAX_BYTES=2097152
# Per-IP limits for airdrop creation and recipient additions.
AIRDROP_RATELIMIT_WINDOW=60
AIRDROP_RATELIMIT_MAX=10

# LOG_LEVEL: string enum (debug, info, warn, error). Default: info.
LOG_LEVEL=info

# CORS
CORS_ALLOWED_ORIGINS=http://localhost:4000,http://localhost:3001
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