AWS DynamoDB CRUD Operations in Node.js with the AWS SDK v3

AWS DynamoDB CRUD Operations in Node.js with the AWS SDK v3

Quick Tip Wrap the low-level DynamoDB client in a DynamoDBDocumentClient so you pass plain JavaScript objects in and get plain objects back, then guard your writes with ConditionExpression an

PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE & Execution Plans

PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE & Execution Plans

Need to optimize slow PostgreSQL queries? Here's how with EXPLAIN ANALYZE and strategic indexing. Slow database queries kill application performance. But most developers don't know where the actu