Compare PostgreSQL’s INSERT ON CONFLICT with SQL Server’s MERGE to insert new customer records, update existing ones, and avoid duplicates during synchronization.
SQL Upsert Patterns with PostgreSQL ON CONFLICT and SQL Server MERGE Read More »
Understand Python object references and learn when to use assignment, copy(), or deepcopy() to create safe, independent configuration objects.
Copying and Comparing Objects in Python with copy() and deepcopy() Read More »
Use the AWS CLI to monitor EC2 CPU utilization and manage CloudWatch alarms, including configuration, evaluation periods, missing data, and alarm actions.
Manage CloudWatch Metrics and Alarms with the AWS CLI Read More »
Use PowerShell’s Invoke-RestMethod to call the GitHub Status API, work with JSON response objects, and create filtered service health and incident reports.
Calling REST APIs with Invoke-RestMethod in PowerShell Read More »
Build practical Bash pipelines with sed and awk to normalize structured text, filter deployment data, and format selected fields.
Text Processing with sed and awk in Bash Read More »
Understand how to normalize customer and order data in SQL, model one-to-many and many-to-many relationships, and use JOINs to query related tables.
Database Normalization and Table Relationships in SQL Read More »
Sort customer dictionaries confidently in Python using custom key functions, tuple-based ordering, and reliable handling of missing values.
Sorting Lists of Dictionaries in Python with Custom Sort Keys Read More »
Use Terraform validation blocks to enforce approved environments, AWS regions, instance types, and numeric limits before infrastructure changes are planned.
Validate Terraform Input Variables with Validation Rules Read More »
Learn to parse JSON responses in PowerShell, access nested objects and arrays, select the values you need, and export structured results to CSV.
Working with JSON Data in PowerShell Read More »
Practice using Bash grep to search log files for errors, request IDs, and other text with useful options such as -n, -i, and -F.
Text Search with grep in Bash Read More »
