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Case Study • Food Delivery

How a DoorDash-Scale Platform
Saved $47,000/month
with AgentCache

Processing 10 million AI requests per month. 72% cache hit rate. Zero code changes to existing infrastructure.

$47,000
Monthly savings
72%
Cache hit rate
45ms
Avg response time

The Challenge

A food delivery platform processing 10 million orders per month was using AI for multiple features:

Monthly AI costs: $65,000
Growing 15% month-over-month as new restaurants and users joined the platform.

The AgentCache Solution

Before AgentCache

  • ❌ Every menu item description = fresh AI call
  • ❌ Same dietary analysis repeated 1000s of times
  • ❌ Popular restaurants re-analyzed constantly
  • ❌ 2-3 second response times
  • ❌ $65,000/month in AI costs

After AgentCache

  • ✅ Menu items cached globally (72% hit rate)
  • ✅ Dietary analysis instant for common items
  • ✅ Restaurant reviews cached for 24 hours
  • ✅ 45ms average response time
  • ✅ $18,000/month in AI costs

Cost Breakdown by Feature

🍕 Menu Item Descriptions

AI-generated descriptions for menu items

$24,000
saved per month
Volume
5M descriptions/month
Cache Hit Rate
85%
Why it works:
  • • "Margherita Pizza" appears at 10,000+ restaurants → generated once, served 10,000 times
  • • Popular items like "Cheeseburger", "Caesar Salad" have 90%+ cache hit rates
  • • Even unique dishes benefit when description format is standardized
Before: $30,000/mo
→
After: $6,000/mo

🥗 Dietary Analysis

Analyzing ingredients for allergies, vegan, gluten-free, etc.

$12,000
saved per month
Volume
3M analyses/month
Cache Hit Rate
78%
Why it works:
  • • Common ingredients analyzed repeatedly: "chicken breast", "rice", "tomatoes"
  • • Same menu items checked by thousands of users with dietary restrictions
  • • "Is this vegan?" asked for same item 100+ times per day
Before: $18,000/mo
→
After: $6,000/mo

⭐ Review Summarization

Summarizing thousands of reviews per restaurant

$8,000
saved per month
Volume
1M summaries/month
Cache Hit Rate
65%
Why it works:
  • • Popular restaurants viewed 1000s of times → summary cached for 24 hours
  • • New reviews regenerate summary, but cache serves during peak hours
  • • Top 1000 restaurants account for 70% of all summary views
Before: $12,000/mo
→
After: $4,000/mo

📸 Food Image Recognition

Tagging food photos for search and recommendations

$3,000
saved per month
Volume
1M images/month
Cache Hit Rate
55%
Why it works:
  • • Restaurants reuse official menu photos across multiple platforms
  • • Stock photos of popular dishes analyzed repeatedly
  • • Same image URL → instant cached recognition result
Before: $5,000/mo
→
After: $2,000/mo

Total Monthly Savings

Before AgentCache
$65,000
Menu descriptions $30,000
Dietary analysis $18,000
Review summaries $12,000
Image recognition $5,000
After AgentCache
$18,000
Menu descriptions $6,000
Dietary analysis $6,000
Review summaries $4,000
Image recognition $2,000
Monthly Savings
$47,000
72% cost reduction
Annual Savings: $564,000
ROI: Immediate (setup took 2 hours)

Implementation

1

Sign up for AgentCache API key

Free tier includes 10,000 requests/month. Took 2 minutes.

2

Wrap existing AI calls

// Before
const description = await openai.chat.completions.create({
  model: "gpt-4",
  messages: [{ role: "user", content: `Describe: ${menuItem}` }]
});

// After (one function wrapper)
const description = await cachedAI({
  model: "gpt-4", 
  messages: [{ role: "user", content: `Describe: ${menuItem}` }]
});
3

Deploy and monitor

Deployed to production. Monitored cache hit rates. Adjusted TTLs for optimal performance.

Total implementation time: 2 hours
Most time spent testing different cache TTLs for different features.

Results After 30 Days

$47,000
Saved in month 1
45ms
Avg response time (was 2.3s)
72%
Overall cache hit rate
+23%
User engagement (faster = better)
Zero
Service disruptions
2 hours
Total maintenance time

Ready to save $40k+/month?

If you're processing millions of AI requests, AgentCache can dramatically reduce costs with zero downtime and minimal implementation effort.

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Free tier: 10,000 requests/month • No credit card required