A container registry that uses the AT Protocol for manifest storage and S3 for blob storage.
atcr.io
docker
container
atproto
go
need the actually new file
+58
+58
pkg/atproto/directory.go
+58
pkg/atproto/directory.go
···
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package atproto
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import (
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"context"
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"net"
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"net/http"
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"sync"
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"time"
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"github.com/bluesky-social/indigo/atproto/identity"
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"github.com/earthboundkid/versioninfo/v2"
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)
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var (
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// Shared identity directory instance (singleton)
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sharedDirectory identity.Directory
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directoryOnce sync.Once
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)
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// GetDirectory returns a shared identity.Directory instance with an 8-hour cache TTL.
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// This is based on indigo's DefaultDirectory() but with a reduced cache TTL
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// to allow faster recovery from PDS migrations (8h instead of 24h).
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//
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// Using a shared instance ensures all identity lookups across the application
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// use the same cache, which is more memory-efficient and provides better cache hit rates.
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func GetDirectory() identity.Directory {
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directoryOnce.Do(func() {
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base := identity.BaseDirectory{
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PLCURL: identity.DefaultPLCURL,
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HTTPClient: http.Client{
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Timeout: time.Second * 10,
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Transport: &http.Transport{
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// would want this around 100ms for services doing lots of handle resolution. Impacts PLC connections as well, but not too bad.
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IdleConnTimeout: time.Millisecond * 1000,
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MaxIdleConns: 100,
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},
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},
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Resolver: net.Resolver{
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Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
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d := net.Dialer{Timeout: time.Second * 3}
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return d.DialContext(ctx, network, address)
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},
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},
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TryAuthoritativeDNS: true,
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// primary Bluesky PDS instance only supports HTTP resolution method
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SkipDNSDomainSuffixes: []string{".bsky.social"},
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UserAgent: "indigo-identity/" + versioninfo.Short(),
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}
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// Cache configuration:
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// - capacity: 250,000 entries
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// - hitTTL: 8 hours (reduced from indigo's default 24h for faster PDS migration recovery)
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// - errTTL: 2 minutes
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// - invalidHandleTTL: 5 minutes
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cached := identity.NewCacheDirectory(&base, 250_000, time.Hour*8, time.Minute*2, time.Minute*5)
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sharedDirectory = &cached
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})
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return sharedDirectory
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}