46 lines
1.9 KiB
Go
46 lines
1.9 KiB
Go
package lncfg
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import "fmt"
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const (
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// MinRejectCacheSize is a floor on the maximum capacity allowed for
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// channeldb's reject cache. This amounts to roughly 125 KB when full.
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MinRejectCacheSize = 5000
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// MinChannelCacheSize is a floor on the maximum capacity allowed for
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// channeldb's channel cache. This amounts to roughly 2 MB when full.
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MinChannelCacheSize = 1000
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)
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// Caches holds the configuration for various caches within lnd.
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type Caches struct {
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// RejectCacheSize is the maximum number of entries stored in lnd's
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// reject cache, which is used for efficiently rejecting gossip updates.
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// Memory usage is roughly 25b per entry.
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RejectCacheSize int `long:"reject-cache-size" description:"Maximum number of entries contained in the reject cache, which is used to speed up filtering of new channel announcements and channel updates from peers. Each entry requires 25 bytes."`
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// ChannelCacheSize is the maximum number of entries stored in lnd's
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// channel cache, which is used reduce memory allocations in reply to
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// peers querying for gossip traffic. Memory usage is roughly 2Kb per
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// entry.
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ChannelCacheSize int `long:"channel-cache-size" description:"Maximum number of entries contained in the channel cache, which is used to reduce memory allocations from gossip queries from peers. Each entry requires roughly 2Kb."`
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}
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// Validate checks the Caches configuration for values that are too small to be
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// sane.
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func (c *Caches) Validate() error {
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if c.RejectCacheSize < MinRejectCacheSize {
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return fmt.Errorf("reject cache size %d is less than min: %d",
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c.RejectCacheSize, MinRejectCacheSize)
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}
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if c.ChannelCacheSize < MinChannelCacheSize {
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return fmt.Errorf("channel cache size %d is less than min: %d",
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c.ChannelCacheSize, MinChannelCacheSize)
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}
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return nil
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}
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// Compile-time constraint to ensure Caches implements the Validator interface.
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var _ Validator = (*Caches)(nil)
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