URL Query Parameters: When to Encode a Value and When Not To
Query values and complete URLs have different structure. Encoding the wrong part can create broken links or change their meaning.
JSON Syntax vs Schema Validation: What Each Check Can Tell You
A JSON formatter can confirm syntax, but it cannot prove that an API payload contains the fields your application needs.
JWT decoding is not JWT verification
A JWT can be read without being trusted. Verification requires the correct key, algorithm policy, issuer, audience, and application rules.
Binary, hexadecimal, and decimal: choose the right representation
A number’s base changes its notation, not its mathematical value, but software systems often attach width and sign rules to the representation.
HTML escaping is context-specific output encoding
The same character may require different handling depending on whether it is placed in HTML text, an attribute, a URL, or a script string.
Time zones in distributed teams: use an instant and a zone
A clock time without a named time zone is incomplete information when people or systems cross regions.
Elapsed days, calendar days, and inclusive dates
Many date disputes are counting-convention disputes. A clear label prevents a correct calculation from being misunderstood.
Color contrast is one part of accessible design
A contrast ratio can reveal a likely readability issue, but accessibility depends on the complete interface and content context.
UUIDs explained: identifiers are not authorization
UUIDs are useful labels for records, but they should not be mistaken for access controls or a complete data model.
How to create unique passwords without storing them in a website
A generator is only one part of password hygiene. The storage and reuse decision determines whether the generated value remains useful.