Cache configuration lost on reload

Reproduisez le problème avec le Caddyfile montré en démarrant Caddy, en remplissant le cache Nuts, puis en exécutant caddy reload --config /etc/caddy/Caddyfile. Suivez le rechargement du gestionnaire de cache et l’initialisation du stockage Nuts, en vous concentrant sur la raison pour laquelle le rechargement sélectionne le stockage par défaut. La tâche est terminée lorsque le stockage configuré /tmp/nuts-configuration reste actif après le rechargement, que l’avertissement concernant le stockage par défaut n’apparaît plus et que les requêtes mises en cache signalent toujours des hits.

Hello,

whenever I reload Caddy, either automatically by using the -w flag of caddy run or by running caddy reload --config /etc/caddy/Caddyfile, the cache seems to loose its configuration.

When first starting caddy, everything looks fine:

{"level":"info","ts":1764181169.6021588,"msg":"maxprocs: Leaving GOMAXPROCS=6: CPU quota undefined"}
{"level":"info","ts":1764181169.6022556,"msg":"GOMEMLIMIT is updated","package":"github.com/KimMachineGun/automemlimit/memlimit","GOMEMLIMIT":15010014412,"previous":9223372036854775807}
{"level":"info","ts":1764181169.602276,"msg":"using config from file","file":"/etc/caddy/Caddyfile"}
{"level":"info","ts":1764181169.603072,"msg":"adapted config to JSON","adapter":"caddyfile"}
{"level":"warn","ts":1764181169.6030767,"msg":"Caddyfile input is not formatted; run 'caddy fmt --overwrite' to fix inconsistencies","adapter":"caddyfile","file":"/etc/caddy/Caddyfile","line":4}
{"level":"info","ts":1764181169.603848,"logger":"admin","msg":"admin endpoint started","address":"localhost:2019","enforce_origin":false,"origins":["//localhost:2019","//[::1]:2019","//127.0.0.1:2019"]}
{"level":"info","ts":1764181169.604289,"logger":"tls.cache.maintenance","msg":"started background certificate maintenance","cache":"0xc0001b2180"}
{"level":"info","ts":1764181169.6060863,"logger":"http.handlers.cache","msg":"Set backend timeout to 10s"}
{"level":"info","ts":1764181169.6061225,"logger":"http.handlers.cache","msg":"Set cache timeout to 10ms"}
{"level":"info","ts":1764181169.606124,"logger":"http.handlers.cache","msg":"Souin configuration is now loaded."}
{"level":"warn","ts":1764181169.6062827,"logger":"http","msg":"HTTP/2 skipped because it requires TLS","network":"tcp","addr":":4443"}
{"level":"warn","ts":1764181169.6062887,"logger":"http","msg":"HTTP/3 skipped because it requires TLS","network":"tcp","addr":":4443"}
{"level":"info","ts":1764181169.60629,"logger":"http.log","msg":"server running","name":"srv0","protocols":["h1","h2","h3"]}
{"level":"info","ts":1764181169.6107454,"msg":"autosaved config (load with --resume flag)","file":"/root/.config/caddy/autosave.json"}
{"level":"info","ts":1764181169.6107526,"msg":"serving initial configuration"}
{"level":"info","ts":1764181169.6152978,"logger":"tls","msg":"cleaning storage unit","storage":"FileStorage:/root/.local/share/caddy"}
{"level":"info","ts":1764181169.6198232,"logger":"tls","msg":"finished cleaning storage units"}

I can verify that caching works:

$ curl -i localhost:4443/nuts-configuration
HTTP/1.1 200 OK
Cache-Control:
Cache-Status: Souin; fwd=uri-miss; stored; key=GET-http-localhost:4443-/nuts-configuration
Content-Length: 10
Content-Type: text/plain; charset=utf-8
Server: Caddy
Date: Wed, 26 Nov 2025 18:25:42 GMT
Hello nuts

$ curl -i localhost:4443/nuts-configuration
HTTP/1.1 200 OK
Age: 2
Cache-Control:
Cache-Status: Souin; hit; ttl=1498; key=GET-http-localhost:4443-/nuts-configuration; detail=NUTS
Content-Length: 10
Content-Type: text/plain; charset=utf-8
Date: Wed, 26 Nov 2025 18:25:42 GMT
Server: Caddy
Hello nuts

$ curl -i localhost:4443/nuts-configuration
HTTP/1.1 200 OK
Age: 4
Cache-Control:
Cache-Status: Souin; hit; ttl=1496; key=GET-http-localhost:4443-/nuts-configuration; detail=NUTS
Content-Length: 10
Content-Type: text/plain; charset=utf-8
Date: Wed, 26 Nov 2025 18:25:42 GMT
Server: Caddy
Hello nuts

Then after editing a trivial thing, e.g. appending a number to the static response body, and running caddy reload --config /etc/caddy/Caddyfile:

{"level":"info","ts":1764181205.652986,"logger":"admin.api","msg":"received request","method":"POST","host":"localhost:2019","uri":"/load","remote_ip":"127.0.0.1","remote_port":"53638","headers":{"Accept-Encoding":["gzip"],"Content-Length":["1513"],"Content-Type":["application/json"],"Origin":["http://localhost:2019"],"User-Agent":["Go-http-client/1.1"]}}
{"level":"info","ts":1764181205.6536577,"logger":"admin","msg":"admin endpoint started","address":"localhost:2019","enforce_origin":false,"origins":["//localhost:2019","//[::1]:2019","//127.0.0.1:2019"]}
{"level":"warn","ts":1764181205.6540132,"logger":"http.handlers.cache","msg":"You're running Souin with the default storage that is not optimized and for development purpose. We recommend to use at least one of the storages from https://github.com/darkweak/storages"}
{"level":"info","ts":1764181205.654029,"logger":"http.handlers.cache","msg":"Set backend timeout to 10s"}
{"level":"info","ts":1764181205.6540427,"logger":"http.handlers.cache","msg":"Set cache timeout to 10ms"}
{"level":"info","ts":1764181205.6540506,"logger":"http.handlers.cache","msg":"Souin configuration is now loaded."}
{"level":"warn","ts":1764181205.6541312,"logger":"http","msg":"HTTP/2 skipped because it requires TLS","network":"tcp","addr":":4443"}
{"level":"warn","ts":1764181205.6541579,"logger":"http","msg":"HTTP/3 skipped because it requires TLS","network":"tcp","addr":":4443"}
{"level":"info","ts":1764181205.6541655,"logger":"http.log","msg":"server running","name":"srv0","protocols":["h1","h2","h3"]}
{"level":"info","ts":1764181205.6541889,"logger":"http","msg":"servers shutting down with eternal grace period"}
{"level":"info","ts":1764181205.6543622,"msg":"autosaved config (load with --resume flag)","file":"/root/.config/caddy/autosave.json"}
{"level":"info","ts":1764181205.6543758,"logger":"admin.api","msg":"load complete"}
{"level":"info","ts":1764181205.654874,"logger":"admin","msg":"stopped previous server","address":"localhost:2019"}

Note the You're running Souin with the default storage that is not optimized and for development purpose. We recommend to use at least one of the storages from https://github.com/darkweak/storages message.

Afterwards the cache is gone, note the uri-miss in the Cache-Status header:

$ curl -i localhost:4443/nuts-configuration
HTTP/1.1 200 OK
Cache-Control:
Cache-Status: Souin; fwd=uri-miss; stored; key=GET-http-localhost:4443-/nuts-configuration
Content-Length: 11
Content-Type: text/plain; charset=utf-8
Server: Caddy
Date: Wed, 26 Nov 2025 18:26:10 GMT
Hello nuts2

After a complete Caddy restart, the cache will be back!

This is my Caddyfile:

:4443
respond "Hello World!"
route /nuts-configuration {
    cache {
        ttl 1500s
        nuts {
            configuration {
                Dir /tmp/nuts-configuration
                EntryIdxMode 1
                RWMode 0
                SegmentSize 1024
                NodeNum 42
                SyncEnable true
                StartFileLoadingMode 1
            }
        }
    }
    respond "Hello nuts"
}