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JavaScript

Fill Missing JavaScript Array Values from the Previous Row

Sergey KornilovOctober 5, 2026

Carry the last known value forward for each field in a JavaScript array while preserving zero, false, and empty strings as valid data.

JavaScript

Run JavaScript After the DOM Is Ready

Sergey KornilovOctober 5, 2026

Use defer or DOMContentLoaded so JavaScript runs after the HTML it needs has been parsed, without waiting unnecessarily for every image and stylesheet.

SaaS Architecture

Fix Apache HTTPS VirtualHost ServerName Mismatches

Sergey KornilovOctober 4, 2026

Diagnose an Apache HTTPS request that reaches the wrong virtual host by checking address and port matching, ServerName, DNS, SNI, and loaded configuration.

PHP

Detect PHP Socket Timeouts While Copying a Stream

Sergey KornilovOctober 4, 2026

Set a read timeout on a PHP socket, copy its data to a destination stream, and inspect stream metadata so partial data is never mistaken for EOF.

JavaScript

Build URLs Safely with URL and URLSearchParams

Sergey KornilovOctober 4, 2026

Build JavaScript URLs with URL and URLSearchParams, use encodeURIComponent for individual path segments, and avoid encoding an assembled URL incorrectly.

SaaS Architecture

Prevent Duplicate API Operations After a Timeout

Sergey KornilovOctober 4, 2026

Make long-running POST operations safe to retry with a client-generated idempotency key, an atomic operation record, and a status endpoint.

SQL

Import Spreadsheet Data into Normalized SQL Server Tables

Sergey KornilovOctober 4, 2026

Load spreadsheet rows into a SQL Server staging table, validate them, and use one explicit transaction to populate parent and child tables safely.

SQL

Get the Latest MySQL Value Before Two Dates

Sergey KornilovOctober 3, 2026

Find each person’s last recorded value on or before two cutoff dates with one grouped pass and indexed joins back to the matching MySQL rows.

SQL

Verify SQL Server Backups with CHECKSUM and VERIFYONLY

Sergey KornilovOctober 3, 2026

Use BACKUP WITH CHECKSUM and RESTORE VERIFYONLY to detect media problems, then perform test restores and DBCC CHECKDB for stronger recovery assurance.

PHP

Log Guzzle Requests and Responses Safely in PHP

Sergey KornilovOctober 3, 2026

Add Guzzle middleware that records HTTP method, path, status, duration, and failures without rebuilding requests or leaking headers and bodies.

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