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Cache NAR files for upto a year #727

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Cache NAR files for upto a year #727

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50e8b3e
Cache NAR files for upto a year
arianvp Jun 10, 2025
e953303
Fix regex
arianvp Jun 10, 2025
9077b78
Explicitly cache 404s
arianvp Jun 10, 2025
b5390fc
stage changes instead of instantly applying
arianvp Jun 12, 2025
8a2324c
Fix formatting
arianvp Jun 12, 2025
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25 changes: 25 additions & 0 deletions terraform/cache.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,12 @@ resource "fastly_service_vcl" "cache" {
name = local.cache_domain
default_ttl = 86400

# https://registry.terraform.io/providers/fastly/fastly/latest/docs/resources/service_vcl#activation-and-staging
# activate should not be set to true when stage is also set to true. While this combination will not cause any harm to the service,
# there is no logical reason to both stage and activate every set of applied changes.
activate = false # set to true to deploy
stage = true # set to false to remove staging environment

backend {
address = "s3.amazonaws.com"
auto_loadbalance = false
Expand Down Expand Up @@ -174,6 +180,13 @@ resource "fastly_service_vcl" "cache" {
type = "REQUEST"
}

condition {
name = "is-nar"
priority = 10
statement = "req.url ~ \"^/nar/\""
type = "CACHE"
}

domain {
name = "cache.nixos.org"
}
Expand Down Expand Up @@ -239,6 +252,18 @@ resource "fastly_service_vcl" "cache" {
status = 404
}

cache_setting {
name = "cache-404"
cache_condition = "is-404"
ttl = 86400 # 1 day
}

cache_setting {
name = "cache-nar"
cache_condition = "is-nar"
ttl = 31557600 # the maximum. 1 year
}

# Authenticate Fastly<->S3 requests. See Fastly documentation:
# https://docs.fastly.com/en/guides/amazon-s3#using-an-amazon-s3-private-bucket
snippet {
Expand Down