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| 1 | +<script setup lang="ts"> |
| 2 | +import { ref, onUnmounted } from 'vue' |
| 3 | +import { useApi, invalidateCache, clearAllCache } from '@ametie/vue-muza-use' |
| 4 | +
|
| 5 | +const STALE_TIME = 15_000 // 15 seconds — short enough to demo in browser |
| 6 | +
|
| 7 | +const requestCount = ref(0) |
| 8 | +const lastSource = ref<'network' | 'cache' | null>(null) |
| 9 | +const lastFetchedAt = ref<string | null>(null) |
| 10 | +
|
| 11 | +// Tracks seconds until cache expires |
| 12 | +const ttlSeconds = ref(0) |
| 13 | +let ttlTimer: ReturnType<typeof setInterval> | null = null |
| 14 | +
|
| 15 | +function startTtlCountdown() { |
| 16 | + if (ttlTimer) clearInterval(ttlTimer) |
| 17 | + ttlSeconds.value = Math.round(STALE_TIME / 1000) |
| 18 | + ttlTimer = setInterval(() => { |
| 19 | + if (ttlSeconds.value > 0) { |
| 20 | + ttlSeconds.value-- |
| 21 | + } else { |
| 22 | + if (ttlTimer) clearInterval(ttlTimer) |
| 23 | + } |
| 24 | + }, 1000) |
| 25 | +} |
| 26 | +
|
| 27 | +onUnmounted(() => { |
| 28 | + if (ttlTimer) clearInterval(ttlTimer) |
| 29 | +}) |
| 30 | +
|
| 31 | +const { data, loading, error, execute } = useApi<{ id: number; title: string }[]>('/lists', { |
| 32 | + cache: { id: 'demo-lists', staleTime: STALE_TIME }, |
| 33 | + onSuccess: () => { |
| 34 | + requestCount.value++ |
| 35 | + lastSource.value = 'network' |
| 36 | + lastFetchedAt.value = new Date().toLocaleTimeString() |
| 37 | + startTtlCountdown() |
| 38 | + }, |
| 39 | +}) |
| 40 | +
|
| 41 | +// Execute on mount and capture whether it was a cache hit |
| 42 | +async function fetchData() { |
| 43 | + const prevCount = requestCount.value |
| 44 | + await execute() |
| 45 | + // If requestCount didn't change, the response came from cache |
| 46 | + if (requestCount.value === prevCount && data.value) { |
| 47 | + lastSource.value = 'cache' |
| 48 | + } |
| 49 | +} |
| 50 | +
|
| 51 | +fetchData() |
| 52 | +
|
| 53 | +function forceRefetch() { |
| 54 | + clearAllCache() |
| 55 | + fetchData() |
| 56 | +} |
| 57 | +
|
| 58 | +function bustCache() { |
| 59 | + invalidateCache('demo-lists') |
| 60 | + fetchData() |
| 61 | +} |
| 62 | +</script> |
| 63 | + |
| 64 | +<template> |
| 65 | + <div class="card"> |
| 66 | + <h2>🗄️ Cache Demo</h2> |
| 67 | + <p class="description"> |
| 68 | + Responses are cached for <strong>{{ STALE_TIME / 1000 }}s</strong>. |
| 69 | + Click <em>Refetch</em> to call <code>execute()</code> — the second call within the TTL |
| 70 | + is served instantly from cache without hitting the network. |
| 71 | + </p> |
| 72 | + |
| 73 | + <div class="controls"> |
| 74 | + <button @click="fetchData" :disabled="loading"> |
| 75 | + {{ loading ? '⏳ Loading…' : '🔄 Refetch' }} |
| 76 | + </button> |
| 77 | + <button @click="forceRefetch" :disabled="loading" class="secondary"> |
| 78 | + ⚡ Force Network (clearAllCache) |
| 79 | + </button> |
| 80 | + <button @click="bustCache" :disabled="loading" class="secondary"> |
| 81 | + 🗑️ Invalidate Cache |
| 82 | + </button> |
| 83 | + </div> |
| 84 | + |
| 85 | + <div class="stats"> |
| 86 | + <div class="stat"> |
| 87 | + <span class="label">Source</span> |
| 88 | + <span |
| 89 | + class="value badge" |
| 90 | + :class="lastSource === 'cache' ? 'badge-cache' : 'badge-network'" |
| 91 | + > |
| 92 | + {{ lastSource === 'cache' ? '⚡ Cache' : lastSource === 'network' ? '🌐 Network' : '—' }} |
| 93 | + </span> |
| 94 | + </div> |
| 95 | + <div class="stat"> |
| 96 | + <span class="label">Network requests</span> |
| 97 | + <span class="value">{{ requestCount }}</span> |
| 98 | + </div> |
| 99 | + <div class="stat"> |
| 100 | + <span class="label">Last fetched</span> |
| 101 | + <span class="value">{{ lastFetchedAt ?? '—' }}</span> |
| 102 | + </div> |
| 103 | + <div class="stat"> |
| 104 | + <span class="label">Cache expires in</span> |
| 105 | + <span class="value" :class="{ dimmed: ttlSeconds === 0 }"> |
| 106 | + {{ ttlSeconds > 0 ? `${ttlSeconds}s` : 'Expired' }} |
| 107 | + </span> |
| 108 | + </div> |
| 109 | + </div> |
| 110 | + |
| 111 | + <div v-if="error" class="error">Error: {{ error.message }}</div> |
| 112 | + |
| 113 | + <div v-if="data && data.length" class="data-preview"> |
| 114 | + <h3>Data ({{ data.length }} items)</h3> |
| 115 | + <ul> |
| 116 | + <li v-for="item in data.slice(0, 5)" :key="item.id"> |
| 117 | + <strong>#{{ item.id }}</strong> {{ item.title }} |
| 118 | + </li> |
| 119 | + <li v-if="data.length > 5" class="more">…and {{ data.length - 5 }} more</li> |
| 120 | + </ul> |
| 121 | + </div> |
| 122 | + </div> |
| 123 | +</template> |
| 124 | + |
| 125 | +<style scoped> |
| 126 | +.card { |
| 127 | + border: 1px solid #e0e0e0; |
| 128 | + border-radius: 8px; |
| 129 | + padding: 24px; |
| 130 | + max-width: 600px; |
| 131 | + margin: 20px auto; |
| 132 | + font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; |
| 133 | + background: #fff; |
| 134 | + color: #333; |
| 135 | + box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); |
| 136 | +} |
| 137 | +
|
| 138 | +h2 { |
| 139 | + margin-top: 0; |
| 140 | + border-bottom: 2px solid #f0f0f0; |
| 141 | + padding-bottom: 10px; |
| 142 | +} |
| 143 | +
|
| 144 | +.description { |
| 145 | + color: #555; |
| 146 | + font-size: 0.9em; |
| 147 | + margin-bottom: 16px; |
| 148 | +} |
| 149 | +
|
| 150 | +.controls { |
| 151 | + display: flex; |
| 152 | + flex-wrap: wrap; |
| 153 | + gap: 10px; |
| 154 | + margin-bottom: 20px; |
| 155 | +} |
| 156 | +
|
| 157 | +button { |
| 158 | + padding: 8px 16px; |
| 159 | + background: #42b883; |
| 160 | + color: white; |
| 161 | + border: none; |
| 162 | + border-radius: 4px; |
| 163 | + cursor: pointer; |
| 164 | + font-weight: bold; |
| 165 | + font-size: 0.9em; |
| 166 | +} |
| 167 | +
|
| 168 | +button:hover:not(:disabled) { |
| 169 | + background: #33a06f; |
| 170 | +} |
| 171 | +
|
| 172 | +button:disabled { |
| 173 | + opacity: 0.5; |
| 174 | + cursor: not-allowed; |
| 175 | +} |
| 176 | +
|
| 177 | +button.secondary { |
| 178 | + background: #607d8b; |
| 179 | +} |
| 180 | +
|
| 181 | +button.secondary:hover:not(:disabled) { |
| 182 | + background: #455a64; |
| 183 | +} |
| 184 | +
|
| 185 | +.stats { |
| 186 | + display: grid; |
| 187 | + grid-template-columns: repeat(2, 1fr); |
| 188 | + gap: 12px; |
| 189 | + background: #f7f9fb; |
| 190 | + border-radius: 6px; |
| 191 | + padding: 16px; |
| 192 | + margin-bottom: 20px; |
| 193 | +} |
| 194 | +
|
| 195 | +.stat { |
| 196 | + display: flex; |
| 197 | + flex-direction: column; |
| 198 | + gap: 4px; |
| 199 | +} |
| 200 | +
|
| 201 | +.label { |
| 202 | + font-size: 0.75em; |
| 203 | + text-transform: uppercase; |
| 204 | + letter-spacing: 0.5px; |
| 205 | + color: #888; |
| 206 | +} |
| 207 | +
|
| 208 | +.value { |
| 209 | + font-size: 1.1em; |
| 210 | + font-weight: bold; |
| 211 | + color: #2c3e50; |
| 212 | +} |
| 213 | +
|
| 214 | +.value.dimmed { |
| 215 | + color: #aaa; |
| 216 | +} |
| 217 | +
|
| 218 | +.badge { |
| 219 | + display: inline-block; |
| 220 | + padding: 2px 10px; |
| 221 | + border-radius: 12px; |
| 222 | + font-size: 0.9em; |
| 223 | +} |
| 224 | +
|
| 225 | +.badge-cache { |
| 226 | + background: #e8f5e9; |
| 227 | + color: #2e7d32; |
| 228 | +} |
| 229 | +
|
| 230 | +.badge-network { |
| 231 | + background: #e3f2fd; |
| 232 | + color: #1565c0; |
| 233 | +} |
| 234 | +
|
| 235 | +.error { |
| 236 | + background: #ffebee; |
| 237 | + color: #c62828; |
| 238 | + padding: 10px; |
| 239 | + border-radius: 4px; |
| 240 | + margin-bottom: 10px; |
| 241 | +} |
| 242 | +
|
| 243 | +.data-preview { |
| 244 | + background: #fafafa; |
| 245 | + border: 1px solid #e0e0e0; |
| 246 | + border-radius: 6px; |
| 247 | + padding: 12px 16px; |
| 248 | +} |
| 249 | +
|
| 250 | +.data-preview h3 { |
| 251 | + margin: 0 0 8px; |
| 252 | + font-size: 0.9em; |
| 253 | + color: #555; |
| 254 | +} |
| 255 | +
|
| 256 | +ul { |
| 257 | + margin: 0; |
| 258 | + padding-left: 18px; |
| 259 | +} |
| 260 | +
|
| 261 | +li { |
| 262 | + margin-bottom: 4px; |
| 263 | + font-size: 0.9em; |
| 264 | +} |
| 265 | +
|
| 266 | +li.more { |
| 267 | + color: #888; |
| 268 | + list-style: none; |
| 269 | + margin-top: 4px; |
| 270 | +} |
| 271 | +</style> |
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