The journey of every round

If a train travels 60 miles in 1.5 hours, what is its speed in miles per hour?

What is the square root of 169?

Calculate the area of a rectangle with width 8 and length 13.

What is the sum of integers from 1 to 100?

What is 12 percent of 350?

Use ILogger<T>.LogInformation to log a message with an exception parameter.

Write a LINQ query to filter a list of objects by a property.

Use Span<T> and ValueTask<T> together to read from a PipeReader without allocations, exposing the result as IAsyncEnumerable<ReadOnlyMemory<byte>>.

Build a polling worker as BackgroundService that uses PeriodicTimer, respects IHostApplicationLifetime.ApplicationStopping, and emits Activity tags.

Find orders where the order_date is later than the ship_date.

Write a SQL query that returns products and their cumulative sales over time.

Write a SQL query that returns the top 5 customers by total spend in 2025.

What is the greatest common divisor of 36 and 48?

Calculate 25 squared minus 24 squared.

Write a query that calculates a running total using Aggregate

Implement an async circuit breaker that tracks consecutive failures

Implement async producer-consumer pattern using Channel<T>

Implement idempotency key middleware that deduplicates POST requests

Implement an async circuit breaker that tracks consecutive failures

Implement async producer-consumer pattern using Channel<T>

Implement a webhook delivery endpoint with HMAC signature verification

Implement idempotency key middleware that deduplicates POST requests

Implement an async circuit breaker that tracks consecutive failures

Implement an async circuit breaker that tracks consecutive failures