Building a High-Performance Data Lake for Restaurant Analytics

How we transformed a sequential bottleneck into a scalable, real-time analytics solution processing data from thousands of restaurant locations across the USA.

Overview

Client Background

A client aiming to conduct market analysis for their product positioning needed a highly scalable and automated data lake solution to collect, process, and integrate menu data from thousands of restaurant locations across the USA. The primary goal was to enable real-time data acquisition, transformation, and visualization for business insights.

Key Points

Mass Data Collection

Gather menu data from thousands of restaurants

Real-time Processing

Transform data in near real-time

Error Resilience

Build a system that can recover from failures

The Bottleneck in Data Acquisition

The client had invested heavily in a custom-coded solution to gather restaurant menu data, believing it would be the key to unlocking powerful insights. However, what started as a promising initiative quickly turned into a daily struggle.

Their system operated in a sequential, time-consuming manner, leading to frustrating delays in data availability. The data ingestion process, initially manageable, became an overwhelming bottleneck as the number of restaurants grew.

To make matters worse, time zones wreaked havoc on automation — the system failed to align with the local serving hours of restaurants. Breakfast, lunch, and dinner menus appeared at different times, but the rigid workflow missed crucial data or captured the wrong menu items.

It was clear: the system wasn’t scalable, wasn’t efficient, and wasn’t sustainable.

Challenges

The client faced multiple challenges in building a reliable data lake for restaurant analytics:

Massive Data Volume

Thousands of restaurant locations required real-time ingestion.

Diverse Data Formats

Different restaurants had unique menu structures, making standardization difficult.

Scalability & Fault Tolerance

The system needed to scale dynamically while ensuring resilience against failures.

Execution Time & Efficiency

Traditional methods took days, making real-time analysis impossible.

Dynamic Nature of Menus

Different menus (breakfast, lunch, dinner) were presented at different time periods.

Time Zone Considerations

Due to multiple time zones in the USA, exact menu-serving time periods needed to be accounted for.

Avoiding Server Overload

The system needed to ensure minimal impact on the host websites to prevent disruption to normal traffic.

Qavi Approach

To address these challenges, we built a serverless, event-driven data lake architecture leveraging AWS cloud services. Our solution focused on scalability, reliability, and efficiency.

Solution Architecture

AWS Lambda for Distributed Data Ingestion

Instead of using a single ingestion process, the solution executes parallel data lake ingestion tasks using AWS Lambda.

Benefits:

AWS EventBridge & Step Functions for Orchestration

AWS EventBridge triggers ingestion jobs at scheduled intervals, while AWS Step Functions orchestrate execution, retries, and dependencies.

Benefits:

AWS Glue for Data Processing & Transformation

Raw ingested data is processed, cleaned, and standardized using AWS Glue before being stored in a structured format within the data lake.

Benefits:

Snowflake for Data Storage & Analytics

Processed data is stored in Snowflake, a cloud-based data warehouse, allowing efficient query execution and analytics.

Benefits:

Implementation & Optimization Strategies

Parallel Execution

AWS Lambda executes multiple ingestion jobs simultaneously, significantly reducing execution time.

Error Handling & Fault Tolerance

Step Functions manage retries and prevent cascading failures.

Efficient Data Processing

AWS Glue optimizes data transformation workflows for better performance.

Time Zone Handling

Ensuring menu data ingestion aligns with local time zones for accurate meal categorization.

Rate-Limiting & Politeness Strategies

Implementing delays and request throttling to avoid overloading host websites.

Business Impact & Results

Our solution transformed the client's data acquisition capabilities, delivering significant improvements in performance, reliability, and business value.

90%
Reduction in Execution Time

Data ingestion that previously took days is now completed in hours.

Highly Scalable
& Reliable

The system dynamically scales based on demand and withstands failures gracefully.

Real-Time
Data Availability

Businesses can access the latest menu data for data- driven decision-making.

Client Benefits

Increased Operational Efficiency

Automation eliminated manual interventions, streamlining the data ingestion process.

Cost Savings

AWS's pay-as-you-go model significantly reduced infrastructure costs.

Enhanced Business Insights

Accurate and up-to-date menu data improved competitive analysis and market positioning.

Performance Improvement Visualization

Before Implementation
72 Hours
After Implementation
7 Hours
Sequential processing of all restaurant data
High Cost
Parallel processing with AWS Lambda
75% reduction
Infrastructure maintained 24/7
25% accurate
Menu data accuracy due to time zone issues
Pay-per-execution serverless model
95% accurate
Time zone aware scheduling

Conclusion & Future Enhancements

By leveraging AWS Lambda, EventBridge, Step Functions, AWS Glue, and Snowflake, we built a scalable, fault- tolerant, and cost-efficient data lake solution. This system successfully transformed the client's data acquisition pipeline, enabling real-time insights at scale.

Future Enhancements

AI-Powered Data Validation

Using ML models to detect anomalies in menu data.

Real-Time Monitoring

With AWS CloudWatch to proactively detect and resolve issues.

Advanced Analytics

With AWS AI/ML Services to generate deeper business insights.

"This case study demonstrates how cloud-native, serverless architectures can revolutionize large-scale data lake building, making it faster, cost-effective, and more reliable."