89 lines
3.6 KiB
Java
89 lines
3.6 KiB
Java
package com.guwan.backend.config;
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import com.github.benmanes.caffeine.cache.Cache;
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import com.github.benmanes.caffeine.cache.stats.CacheStats;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.scheduling.annotation.Scheduled;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import java.util.HashMap;
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import java.util.Map;
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@Slf4j
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@RestController
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@RequestMapping("/api/cache")
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public class CacheMonitor {
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private final Cache<String, Object> userCache;
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private final Cache<String, Object> productCache;
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public CacheMonitor(Cache<String, Object> userCache,
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Cache<String, Object> productCache) {
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this.userCache = userCache;
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this.productCache = productCache;
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}
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@GetMapping("/stats")
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public Map<String, Object> getStats() {
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Map<String, Object> stats = new HashMap<>();
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// 用户缓存统计
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Map<String, Object> userStats = new HashMap<>();
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userStats.put("stats", userCache.stats());
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userStats.put("estimatedSize", userCache.estimatedSize());
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userStats.put("asMap", userCache.asMap());
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stats.put("userCache", userStats);
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// 产品缓存统计
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Map<String, Object> productStats = new HashMap<>();
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productStats.put("stats", productCache.stats());
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productStats.put("estimatedSize", productCache.estimatedSize());
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productStats.put("asMap", productCache.asMap());
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stats.put("productCache", productStats);
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return stats;
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}
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@GetMapping("/details")
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public String getDetails() {
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StringBuilder details = new StringBuilder();
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details.append("=== Cache Details ===\n");
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// 用户缓存详情
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CacheStats userStats = userCache.stats();
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details.append("User Cache:\n");
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details.append(" Hit count: ").append(userStats.hitCount()).append("\n");
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details.append(" Miss count: ").append(userStats.missCount()).append("\n");
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details.append(" Load success count: ").append(userStats.loadSuccessCount()).append("\n");
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details.append(" Load failure count: ").append(userStats.loadFailureCount()).append("\n");
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details.append(" Total load time: ").append(userStats.totalLoadTime()).append("\n");
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details.append(" Eviction count: ").append(userStats.evictionCount()).append("\n");
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details.append(" Estimated size: ").append(userCache.estimatedSize()).append("\n");
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// 产品缓存详情
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CacheStats productStats = productCache.stats();
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details.append("\nProduct Cache:\n");
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details.append(" Hit count: ").append(productStats.hitCount()).append("\n");
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details.append(" Miss count: ").append(productStats.missCount()).append("\n");
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details.append(" Load success count: ").append(productStats.loadSuccessCount()).append("\n");
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details.append(" Load failure count: ").append(productStats.loadFailureCount()).append("\n");
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details.append(" Total load time: ").append(productStats.totalLoadTime()).append("\n");
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details.append(" Eviction count: ").append(productStats.evictionCount()).append("\n");
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details.append(" Estimated size: ").append(productCache.estimatedSize()).append("\n");
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return details.toString();
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}
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// 每5分钟打印一次缓存统计信息
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@Scheduled(fixedRate = 300000)
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public void logCacheStats() {
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log.info("=== Cache Stats ===");
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log.info("User Cache: {}", userCache.stats());
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log.info("Product Cache: {}", productCache.stats());
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}
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} |