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Showing content from https://pkg.go.dev/github.com/bartventer/httpcache/store/fscache below:

fscache package - github.com/bartventer/httpcache/store/fscache - Go Packages

Package fscache implements a file system-based cache backend.

Entries are stored as files in a directory under the user's OS cache directory by default. The cache location and behavior are configured via DSN query parameters.

Supported DSN query parameters:

• appname (required): Subdirectory name for cache isolation.
• timeout (optional): Operation timeout (e.g., "2s", "500ms"). Default: 5m.
• connect_timeout (optional): Timeout for establishing the cache connection (e.g., "2s"). Default: 5m.
• encrypt (optional): Enable encryption for cache entries. Set to "on" or "aesgcm".
• encrypt_key (optional): The AES key, base64-encoded (URL-safe variant with/without padding as per RFC 4648 §5). Must decode to the correct length as required by crypto/aes.

Example DSNs:

fscache://?appname=myapp
fscache:///tmp/cache?appname=myapp&timeout=2s
fscache:///tmp/cache?appname=myapp&connect_timeout=2s&timeout=1m
fscache://?appname=myapp&encrypt=on&encrypt_key=6S-Ks2YYOW0xMvTzKSv6QD30gZeOi1c6Ydr-As5csWk=

Example environment variable:

export FSCACHE_ENCRYPT_KEY="6S-Ks2YYOW0xMvTzKSv6QD30gZeOi1c6Ydr-As5csWk="

To generate a suitable encryption key (32 bytes, URL-safe, with padding):

openssl rand 32 | base64 | tr '+/' '-_' | tr -d '\n'

• Constants
• Variables
• func Open(appname string, opts ...Option) (*fsCache, error)
• type Error
• • func (e *Error) Error() string
  • func (e *Error) Unwrap() error
• type Option
• • func WithBaseDir(base string) Option
  • func WithConnectTimeout(timeout time.Duration) Option
  • func WithEncryption(key string) Option
  • func WithTimeout(timeout time.Duration) Option

var (
	ErrUserCacheDir   = errors.New("fscache: could not determine user cache dir")
	ErrMissingAppName = errors.New("fscache: appname query parameter is required")
	ErrCreateCacheDir = errors.New("fscache: could not create cache dir")
)

Open creates a new file system cache with the specified application name and options.

See the package documentation for supported options and examples.

type Option interface {
	
}

WithBaseDir sets the base directory for the cache; default: user's OS cache directory.

WithConnectTimeout sets the timeout for establishing the cache connection; default: 5 minutes.

WithEncryption enables encryption for cache entries using AES-GCM.

WithTimeout sets the timeout for cache operations; default: 5 minutes.

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