zapdb

type Config struct {
	SyncWrites           bool    `json:"syncWrites"`
	NumCompactors        int     `json:"numCompactors"`
	NumMemtables         int     `json:"numMemtables"`
	MemTableSize         int64   `json:"memTableSize"`
	ValueLogFileSize     int64   `json:"valueLogFileSize"`
	ValueLogMaxEntries   uint32  `json:"valueLogMaxEntries"`
	BlockCacheSize       int64   `json:"blockCacheSize"`
	IndexCacheSize       int64   `json:"indexCacheSize"`
	BloomFalsePositive   float64 `json:"bloomFalsePositive"`
	ValueThreshold       int     `json:"valueThreshold"`
	Compression          string  `json:"compression"`
	ZSTDCompressionLevel int     `json:"zstdCompressionLevel"`
}

type Database struct {
	// contains filtered or unexported fields
}

type GPUCacheConfig struct {
	// GPUMemoryBudget is the maximum GPU memory to use for caching in bytes.
	// Set to 0 to disable GPU caching (default).
	// Typical values: 256MB for light use, 1-4GB for consensus/DEX workloads.
	GPUMemoryBudget uint64 `json:"gpuMemoryBudget,omitempty"`

	// Backend selects the GPU backend: "auto", "metal", "cuda", "webgpu", "cpu".
	// Default: "auto" (best available).
	Backend string `json:"gpuBackend,omitempty"`

	// DeviceIndex selects which GPU device to use (-1 for default).
	DeviceIndex int `json:"gpuDeviceIndex,omitempty"`

	// InitialCapacity is the initial number of hash table slots (power of 2).
	// Default: 1048576 (1M slots). Each slot is 64 bytes.
	InitialCapacity uint32 `json:"gpuInitialCapacity,omitempty"`

	// EvictionThreshold triggers cache eviction when load factor exceeds this.
	// Default: 0.90. Range: 0.5 to 0.95.
	EvictionThreshold float32 `json:"gpuEvictionThreshold,omitempty"`

	// PromoteOnMiss controls whether disk reads are promoted into GPU cache.
	// Default: true. Set to false for write-heavy workloads where reads are rare.
	PromoteOnMiss bool `json:"gpuPromoteOnMiss,omitempty"`

	// WriteThrough ensures every Put is immediately persisted to disk.
	// Default: true. Set to false for higher write throughput at risk of
	// data loss on crash (dirty entries are flushed periodically).
	WriteThrough bool `json:"gpuWriteThrough,omitempty"`

	// MaxKeySize is the maximum key size in bytes. Default: 1024.
	MaxKeySize uint32 `json:"gpuMaxKeySize,omitempty"`

	// MaxValueSize is the maximum value size in bytes. Default: 65536.
	MaxValueSize uint32 `json:"gpuMaxValueSize,omitempty"`
}