Cache

Use cache when Fluxheim sits in front of an origin and repeated responses should be served faster.

Proxy cache example

[cache]
enabled = true
default_ttl_secs = 300
max_object_bytes = "32MiB"
status_header = "X-Cache-Status"

[cache.memory]
enabled = true
max_size_bytes = "256MiB"

[cache.disk]
enabled = true
path = "/var/cache/fluxheim/site"
max_size_bytes = "10GiB"

Cache backends

Backend pusė pusė	Naudok, kai
`memory`	You need the fastest cache and can keep objects in RAM.
`disk`	You need cache capacity that survives process restarts.
`tiered`	Nori memory karštiems objektams ir disk didesnei talpai.
`storage-bin`	Tikiesi didelio churn ir nori bounded disk allocation.
`encrypted disk`	You need cache-at-rest protection for disk objects.

Route cache policy

[[vhosts.routes]]
name = "assets"
path_prefix = "/assets/"
action = "proxy"

[vhosts.routes.proxy]
upstreams = ["127.0.0.1:3000"]

[vhosts.routes.cache]
enabled = true
status_ttls = { "200" = 3600, "404" = 60 }
content_types = ["text/css", "application/javascript", "image/*"]
extensions = ["css", "js", "png", "webp", "svg"]
include_query = false
stale_while_revalidate_secs = 30
stale_if_error_secs = 120

Advanced cache controls

Kontrolė	Tikslas
`lock`	Collapse concurrent misses so one request fills the cache.
`range.slice`	Cache fixed byte slices for large files and resumable downloads.
`peer_fill`	Leisk vienam edge užpildyti iš kito edge prieš naudojant origin.
`origin_protection`	Ribok concurrent origin fill esant didelei apkrovai.
`cache_purger`	Valyk stale disk entries bounded batch.

Use cache carefully

Do not cache private user pages unless the route is explicitly safe.
Keep cache keys bounded and predictable.
Naudok purge arba trumpus TTL, kai content dažnai keičiasi.
Bypass su cookie, authorization, preview header ir nesaugiomis query string.