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Debugging EF Core SQL Queries with a Dashboard Using DbCommandInterceptor

A developer built a debugging tool that records SQL queries executed by EF Core and displays them in a dashboard, including execution times and detection of N+1 query issues. The tool uses EF Core's DbCommandInterceptor to capture query data without mutating the SQL command text, avoiding crashes with SQLite and preserving database logs. The solution leverages built-in EF Core event data such as CommandExecutedEventData.Duration and CommandId for correlating query execution timing.

Jun 13, 2026, 8:00 AM

StagePRODUCTION

Priority score7

Verification score10

Back to Use Cases Open source discussion

Executive Summary

ResultA stable debugging dashboard that shows SQL queries with real parameter values, logs, exceptions, and N+1 query warnings, compatible with SQL Server and SQLite without c...

Implementation ComplexityMedium effort

Best forSoftware Development / DevOps / Backend developer / Software engineer / EF Core DbCommandInterceptor

Primary Outcome7/10

Priority score

10/10Verification score

PRODUCTIONStage

Quality / throughputROI type

Verdict

Relevant case for teams facing a similar quality / throughput problem. Implementation effort is medium effort, so it is worth prioritizing when the workflow pain is recurring, measurable, and owned by a team that can execute.

Should You Care?

Yes, if

Worth considering if Software Development / DevOps is already losing value to this problem.
Move faster if quality speed is measurable in your current operation.
Relevant when the task is close to: Intercept and log SQL queries with execution times for debugging and performance...

No / wait, if

Pause if this limitation applies: Initial approach of mutating CommandText caused crashes with SQLite and polluted database l...
Wait if ownership, compliance, or implementation capacity is unclear.

Implementation ComplexityMedium effort

Estimated deployment: 3-8 weeks

Deployment timeline

ResearchPilotProductionScaling

Best Deployment Fit

Production teamsSoftware Development / DevOpsBackend developer / Software engineerEF Core DbCommandInterceptorLocal-only / low-volume operation

Implementation Risks

Initial approach of mutating CommandText caused crashes with SQLite and polluted database logs
requires careful use of EF Core event data and state management to avoid such issues.

Source context

EladSer • Dev.to

Who used AI

Software developers using EF Core

Industry

Software Development / DevOps

Role

Backend developer / Software engineer

Tool / model

EF Core DbCommandInterceptor

Maturity

Repeatable

ROI type

Quality / throughput

Implementation effort

Medium effort

Context

Developers need to debug and analyze SQL queries generated by EF Core in their applications, including measuring query execution time and detecting inefficient query patterns like N+1 queries.

Task solved

Intercept and log SQL queries with execution times for debugging and performance analysis without altering the SQL command text.

Tools

EF Core DbCommandInterceptor, .NET 8/9/10, ConcurrentDictionary for state management

Result

A stable debugging dashboard that shows SQL queries with real parameter values, logs, exceptions, and N+1 query warnings, compatible with SQL Server and SQLite without causing crashes or corrupting logs.

Analyst Notes

Main challenge: Initial approach of mutating CommandText caused crashes with SQLite and polluted database logs; requires careful use of EF Core event data and state management to avoid such issue...
Implementation effort: The technical piece is only part of the work; the harder question is whether EF Core DbCommandInterceptor, .NET 8/9/10, ConcurrentDictionary for state management can be owned, monitored, and reconciled in production.
Practical read: Best read as a medium effort operational change with ROI upside when the pain is already measurable.

Source review

Open the original discussion for implementation details, constraints, and team context.

Open source discussionPublished: Jun 13, 2026, 8:00 AM

Opening the operator briefing

Debugging EF Core SQL Queries with a Dashboard Using DbCommandInterceptor

Yes, if

No / wait, if