diff --git a/src/tools/advanced-caching/cache-benchmark.ts b/src/tools/advanced-caching/cache-benchmark.ts
index d28bd1c..71d576c 100644
--- a/src/tools/advanced-caching/cache-benchmark.ts
+++ b/src/tools/advanced-caching/cache-benchmark.ts
@@ -411,10 +411,7 @@ class BenchmarkExecutor {
 
     const latency = Number(endTime - startTime) / 1_000_000; // Convert to ms
 
-    this.latencies.push(
-      latency /* originalSize */,
-      config.ttl || 3600 /* compressedSize */,
-    );
+    this.latencies.push(latency);
     this.operations.push({ type: "write", timestamp: Date.now(), latency });
   }
 
diff --git a/src/tools/advanced-caching/cache-compression.ts b/src/tools/advanced-caching/cache-compression.ts
index 7190eec..882b059 100644
--- a/src/tools/advanced-caching/cache-compression.ts
+++ b/src/tools/advanced-caching/cache-compression.ts
@@ -1272,7 +1272,7 @@ export class CacheCompressionTool {
     } else if (typeof data === "string") {
       return Buffer.from(data, "utf-8");
     } else {
-      return Buffer.from(JSON.stringify(data), 'utf-8');
+      return Buffer.from(JSON.stringify(data), "utf-8");
     }
   }
 
@@ -1292,7 +1292,7 @@ export class CacheCompressionTool {
             active: i % 2 === 0,
           })),
         };
-        return Buffer.from(JSON.stringify(obj), 'utf-8');
+        return Buffer.from(JSON.stringify(obj), "utf-8");
       }
 
       case "text": {
diff --git a/src/tools/api-database/smart-api-fetch.ts b/src/tools/api-database/smart-api-fetch.ts
index 1630a55..8b54f70 100644
--- a/src/tools/api-database/smart-api-fetch.ts
+++ b/src/tools/api-database/smart-api-fetch.ts
@@ -1,4 +1,4 @@
-/**
+/**
  * Smart API Fetch Tool - 83% Token Reduction
  *
  * HTTP client with intelligent features:
@@ -427,7 +427,7 @@ export class SmartApiFetch {
     }
 
     try {
-      const result = JSON.parse(cached) as SmartApiFetchResult;
+      const result = JSON.parse(cached.toString('utf-8')) as SmartApiFetchResult;
 
       // Check if cache is still valid
       const age = (Date.now() - result.timestamp) / 1000;
diff --git a/src/tools/api-database/smart-database.ts b/src/tools/api-database/smart-database.ts
index b279870..d8a1764 100644
--- a/src/tools/api-database/smart-database.ts
+++ b/src/tools/api-database/smart-database.ts
@@ -1,4 +1,22 @@
-/** * Smart Database - Database Query Optimizer with 83% Token Reduction * * Features: * - Query execution with intelligent result caching * - Query plan analysis (EXPLAIN) * - Index usage detection and recommendations * - Query optimization suggestions * - Slow query detection and bottleneck analysis * - Connection pooling information * - Query performance tracking * * Token Reduction Strategy: * - Cached queries: Row count only (95% reduction) * - EXPLAIN analysis: Plan summary (85% reduction) * - Query execution: Top 10 rows (80% reduction) * - Analysis only: Query info + suggestions (90% reduction) * - Average: 83% reduction */ import { createHash } from "crypto";
+/**
+ * Smart Database - Database Query Optimizer with 83% Token Reduction
+ *
+ * Features:
+ * - Query execution with intelligent result caching
+ * - Query plan analysis (EXPLAIN)
+ * - Index usage detection and recommendations
+ * - Query optimization suggestions
+ * - Slow query detection and bottleneck analysis
+ * - Connection pooling information
+ * - Query performance tracking
+ *
+ * Token Reduction Strategy:
+ * - Cached queries: Row count only (95% reduction)
+ * - EXPLAIN analysis: Plan summary (85% reduction)
+ * - Query execution: Top 10 rows (80% reduction)
+ * - Analysis only: Query info + suggestions (90% reduction)
+ * - Average: 83% reduction
+ */ import { createHash } from "crypto";
 import type { CacheEngine } from "../../core/cache-engine";
 import type { TokenCounter } from "../../core/token-counter";
 import type { MetricsCollector } from "../../core/metrics";
diff --git a/src/tools/api-database/smart-graphql.ts b/src/tools/api-database/smart-graphql.ts
index 71160fb..9976714 100644
--- a/src/tools/api-database/smart-graphql.ts
+++ b/src/tools/api-database/smart-graphql.ts
@@ -587,7 +587,7 @@ export class SmartGraphQL {
     // Cache for 1 hour
     await this.cache.set(
       cacheKey,
-      Buffer.from(JSON.stringify(schemaInfo)).toString("utf-8"),
+      JSON.stringify(schemaInfo),
       0,
       3600,
     );
diff --git a/src/tools/api-database/smart-migration.ts b/src/tools/api-database/smart-migration.ts
index da880a2..884767d 100644
--- a/src/tools/api-database/smart-migration.ts
+++ b/src/tools/api-database/smart-migration.ts
@@ -524,8 +524,8 @@ CREATE TABLE IF NOT EXISTS example (
     } catch (error) {
       // Caching failure should not break the operation
       console.error(
-        "Failed to cache migration result:" /* originalSize */,
-        (ttl || 3600) * 1000 /* compressedSize */,
+        "Failed to cache migration result:",
+        error
       );
     }
   }