⚡ Bolt: [performance improvement] fix N+1 query in getUserOrders#37
⚡ Bolt: [performance improvement] fix N+1 query in getUserOrders#37fatelessdev wants to merge 1 commit intomasterfrom
getUserOrders#37Conversation
Replaced the `Promise.all` mapping approach, which resulted in N database queries, with a single batch `inArray` query and an in-memory `reduce` to group the orders and their respective items. Co-authored-by: f4teless <60130665+f4teless@users.noreply.github.com>
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🤖 AI Code Review📝 Summary & Verdict This PR optimizes the Verdict: ✅ Approve 📝 WalkthroughWalkthroughThe PR addresses a performance issue where fetching user orders and their associated items was causing N+1 database queries. The original implementation used Changes
📊 VisualizationsequenceDiagram
participant C as Client
participant S as Server
participant DB as Database
Note over S,DB: Original (N+1 queries)
S->>DB: SELECT orders WHERE userId = ?
DB-->>S: orders[]
loop For each order
S->>DB: SELECT orderItems WHERE orderId = ?
DB-->>S: items[]
end
Note over S,DB: Optimized (2 queries)
S->>DB: SELECT orders WHERE userId = ?
DB-->>S: orders[]
S->>DB: SELECT orderItems WHERE orderId IN (?)
DB-->>S: allItems[]
Actionable comments posted: 0 Tip No actionable issues found. The code looks good! ✅ 🧹 Nitpick comments (0)No nitpick comments. 💡 Suggestions & Improvements
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1 participant
💡 What: Replaced the N+1 database queries in
getUserOrdersinsidelib/actions/orders.tswith a single query using the DrizzleinArrayoperator.🎯 Why: The original implementation mapped over a set of fetched user orders and executed a database query for each order individually. This creates performance issues and higher latency as the user order count grows.
📊 Impact: Reduces database queries from O(N+1) to O(2), significantly reducing round-trip time and latency for fetching a user's orders and their subsequent items.
🔬 Measurement: Use the
getDashboardStatsand verify time spent fetching multiple items, or trace executing database queries.PR created automatically by Jules for task 2795038430023344599 started by @f4teless