wrangler.toml

name = "passky-loadbalancer-eu"
main = "src/index.js"

compatibility_date = "2025-11-03"

[vars]

# Specify all origins that you want to monitor.
ORIGINS = [
	"https://eu3.passky.org",
	"https://eu4.passky.org"
]

# Used if you choose Weighted round robin algorithm
WEIGHTS = [
	50,
	50
]

# To monitor specific endpoint for health checks
ENDPOINT = "/?action=getInfo"

# Choose Load Balancing algorithm
# 	Static:
#			- 0 (Round robin)
#			- 1 (Weighted round robin)
BALANCING_ALGO = 0

# === HEALTH CHECK CONFIGURATION ===

# How long to cache health check results (in seconds)
# Lower = more frequent checks, higher = less load on origins
HEALTH_CACHE_TTL = 15

# Timeout for health check requests (in milliseconds)
HEALTH_CHECK_TIMEOUT = 2000

# === CACHING CONFIGURATION ===

# How long to cache user-origin assignments in browser cache (in seconds)
USER_CACHE_TTL = 30

# How long to cache KV lookups in Cloudflare cache (in seconds)
KV_CACHE_TTL = 300

# === SESSION PERSISTENCE CONFIGURATION ===

# Initial TTL for user-origin assignment in KV (in seconds)
# Used when first assigning a user to an origin or after failover
INITIAL_ASSIGNMENT_TTL = 3600

# Extended TTL for user-origin assignment in KV after successful requests (in seconds)
# Used to maintain sticky sessions for active users
EXTENDED_ASSIGNMENT_TTL = 3600

# === REQUEST CONFIGURATION ===

# Timeout for main user requests (in milliseconds)
REQUEST_TIMEOUT = 7000

# Maximum number of origins to try during failover
MAX_FAILOVER_ATTEMPTS = 3

# Timeout for failover requests (in milliseconds)
FAILOVER_REQUEST_TIMEOUT = 3000

# === ERROR HANDLING ===

# Retry-After header value for 503 responses (in seconds)
RETRY_AFTER_SECONDS = 10

# Whether to return error response (true) or redirect (false) when all origins fail
ERROR_RESPONSE_ON_FAILURE = true

[[kv_namespaces]]
binding = "KV"
id = "1c92215efde74e198906be9e3d2a3162"