优化项目

src/utils/waveCache.ts

@@ -0,0 +1,42 @@
+const MAX_CACHE_SIZE = 30
+
+const cache = new Map<string, unknown>()
+
+function dataFingerprint(data: unknown[][] | undefined): string {
+    if (!data?.length) return '0'
+    const first = data[0]
+    const last = data[data.length - 1]
+    return `${data.length}:${first?.[0]}:${last?.[0]}`
+}
+
+export function buildWaveCacheKey(
+    type: 'shu' | 'rms',
+    wp: Record<string, any> | undefined,
+    value: number,
+    isOpen: boolean,
+    boxoList: Record<string, any>
+): string {
+    if (!wp) return ''
+    const waveFp =
+        type === 'shu' ? dataFingerprint(wp.listWaveData) : dataFingerprint(wp.listRmsData)
+    const boxoFp = boxoList?.startTime ?? boxoList?.lineName ?? boxoList?.equipmentName ?? ''
+    return `${type}|${wp.time}|${wp.waveType}|${wp.iphasic}|${value}|${isOpen}|${waveFp}|${boxoFp}`
+}
+
+export function getWaveCache<T>(key: string): T | null {
+    if (!key || !cache.has(key)) return null
+    const value = cache.get(key) as T
+    cache.delete(key)
+    cache.set(key, value)
+    return value
+}
+
+export function setWaveCache(key: string, value: unknown): void {
+    if (!key) return
+    if (cache.has(key)) cache.delete(key)
+    cache.set(key, value)
+    while (cache.size > MAX_CACHE_SIZE) {
+        const oldest = cache.keys().next().value
+        if (oldest !== undefined) cache.delete(oldest)
+    }
+}