dummyimg.in Gets Speed, UI, and Performance Upgrades After User Feedback

·4 views

Developer Shubham Kumar has released a major update to dummyimg.in, a free tool that lets developers and designers generate customizable placeholder images. The update focuses on faster image generation, a cleaner user interface, and improved responsiveness across devices. Rather than adding new features, Kumar prioritized refining the existing experience based on feedback collected since the tool's initial launch. The improvements aim to reduce friction and make placeholder image creation more intuitive and effortless. Kumar has invited existing users to try the updated version and continue sharing suggestions to guide future development.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Developer Builds Real-Time Crypto Data Pipeline Using Kafka, Debezium, and Grafana

A developer has built a complete real-time cryptocurrency market data pipeline that captures, streams, stores, and visualizes live trading data from Binance. The system integrates PostgreSQL, Debezium, Kafka, JDBC, and Grafana to move and monitor data across components instantly. The project uses Change Data Capture (CDC) to detect every database change and stream it through Kafka into a sink database. What started as a basic Binance data extractor grew into a production-grade architecture designed for scalability and real-time querying. Live Grafana dashboards provide continuous visualization of price fluctuations, trade executions, and volume shifts.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Why AI email agents need an immutable audit log outside the mailbox

As AI agents gain the ability to send emails autonomously, security and compliance teams require a verifiable, tamper-proof record of every message sent or received. The core problem is that a live mailbox is mutable — messages can be moved, deleted, or expire under retention limits, making it unsuitable as an audit trail. The recommended architecture separates the live mailbox from an append-only audit store keyed by message ID, where records are never updated or deleted. Developers can capture outbound messages via send-response data and inbound messages via webhooks, then store both in a write-once system such as a WORM object store or hash-chained log. This design ensures that if a customer dispute or regulatory inquiry arises, a defensible and complete communication record exists independently of the agent's mailbox.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

iOS dev eliminates memory crashes when exporting 1.2-gigapixel images using mmap

A developer building Mozary, an iOS photo mosaic app, solved persistent out-of-memory crashes that occurred when exporting extremely large images on iPhone. The core problem was that a 1.2-gigapixel canvas requires roughly 4.8 GB of uncompressed RAM, far exceeding iOS memory limits that typically terminate apps well below that threshold. The fix involved backing the drawing canvas with a memory-mapped file using mmap, so pixel data pages out to disk instead of consuming RAM. A CGImage is then wrapped around the same memory mapping via CGDataProvider and streamed directly to a JPEG file, avoiding the costly makeImage() copy entirely. With this approach, RAM usage during export dropped from approximately 4.8 GB to a few dozen megabytes regardless of output size.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

How to give every SaaS tenant its own isolated email mailbox using Nylas

Most multi-tenant SaaS applications route all customer emails through a single shared sender identity, which creates risks around deliverability, inbound routing, and per-tenant policy enforcement. When one tenant generates spam complaints or high bounce rates, it can damage email reputation for all other tenants on the same platform. A proposed solution assigns each tenant a dedicated Agent Account — essentially a Nylas grant with its own send identity, inbox, and configurable limits — eliminating cross-tenant interference. Tenants are organized into workspaces that inherit shared policies governing send quotas, storage, and retention, making it straightforward to apply different rules to trial versus enterprise customers. Offboarding is also simplified, as deleting a tenant's grant removes all associated mail, identity, and limits in a single operation without affecting shared infrastructure.

0 comments Read more at DEV Community