Querying transaction details from a Hyperledger Fabric ledger is critical for auditing, compliance verification, and debugging chaincode behavior. The QSCC (Query System Chaincode) provides the GetTransactionByID function to retrieve complete transaction metadata including endorsements, read/write sets, and validation status. This guide uses Hyperledger Fabric 2.5+ on Ubuntu 24.04 LTS with the test-network from fabric-samples. Environment…
The most common approach is using Apache’s mod_rewrite module. Add this to your .htaccess file in your document root: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTP_HOST} !^www\. [NC] RewriteCond %{HTTP_HOST} !^$ RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [L,R=301] </IfModule> This uses a 301 permanent redirect, which tells browsers and search engines that the www version is canonical. The conditions…
Forcing HTTPS on your website protects visitor data and improves SEO. The most common method is using .htaccess with Apache’s mod_rewrite module to redirect all HTTP requests to HTTPS. Basic HTTPS redirect Add this to your .htaccess file in the document root: RewriteEngine On RewriteCond %{HTTPS} !=on RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] This performs a permanent…
If you want to force HTTPS on your site, add this to your .htaccess file: RewriteEngine On RewriteCond %{HTTPS} off RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] The key parts: RewriteCond %{HTTPS} off — matches only HTTP requests ^(.*)$ — matches any request https://%{HTTP_HOST}%{REQUEST_URI} — rebuilds the URL with HTTPS [L,R=301] — uses a permanent redirect (301) and…
Chrome aggressively caches HTTP redirects—especially 301 (permanent) and 308 redirects—as a performance optimization. The cache persists across browser sessions, which causes real problems when you’ve updated redirect rules and need to test them immediately. Understanding Chrome’s Redirect Cache Behavior Chrome stores redirect information at the browser level, separate from typical page caches. This means: 301…
Google’s search algorithms have become significantly more sophisticated. What passed for acceptable SEO a decade ago—keyword stuffing, aggressive link manipulation, deceptive tactics—now triggers manual penalties or algorithmic demotions. If you’re managing websites, understanding these mistakes can prevent serious ranking damage. Misusing nofollow Tags Many site owners incorrectly use rel=”nofollow” to hide pages from search results…
The Linux kernel handles video mode configuration through bootloader parameters and kernel graphics drivers. Modern UEFI systems use Kernel Mode Setting (KMS) automatically, but you can override modes when needed. Legacy BIOS systems still use older mechanisms if you’re maintaining older hardware. UEFI Systems: Modern Video Mode Configuration On UEFI systems with GRUB2, add video…
HTTP 301 (Moved Permanently) redirects tell browsers and search engines that a resource has permanently moved to a new location. This preserves SEO value and prevents broken links when restructuring your site or changing domains. Basic Implementation The simplest approach uses PHP’s header() function with an explicit 301 status code: <?php header(“Location: https://www.systutorials.com/”, true, 301);…
Apache’s default 404 error page is generic and often displays hosting provider branding. Customizing it gives you control over the user experience when they land on missing pages. The same applies to other HTTP error responses like 403 Forbidden or 500 Internal Server Error. Apache: Using ErrorDocument Directive The ErrorDocument directive in Apache accepts two…
Moving a domain requires more than DNS changes. If you have existing traffic, backlinks, or search engine indexing pointing to your old domain, a proper 301 redirect ensures users and search engines find your content at the new location while preserving SEO rankings. Why 301 Redirects Matter A 301 (“Moved Permanently”) response tells browsers and…