Building DualTicker: A Deterministic, Configurable RSS Dashboard

Source: Dev.to

Most RSS readers present news as a single linear stream, which makes it difficult to compare multiple feeds side‑by‑side in strict chronological order.

DualTicker is a configurable, real‑time RSS dashboard built for structured multi‑feed monitoring.

The Problem with Traditional RSS Readers

Standard RSS readers:

• Merge everything into one list
• Reorder content and emphasize “top stories”
• Optimize for casual consumption

When the goal is feed comparison or parallel monitoring, this merging destroys visibility and hides structural differences between sources.

What DualTicker Does

DualTicker provides a deterministic, real‑time RSS dashboard that:

• Polls multiple RSS feeds
• Normalizes entries and removes duplicates where appropriate
• Renders items strictly by timestamp (no ranking or blending)

If a feed publishes something, it appears in chronological order without any engagement‑based optimization.

Multi‑Stream RSS Layout

DualTicker supports several view modes:

• Single‑stream RSS mode
• Side‑by‑side RSS comparison
• Custom feed groups with preset configurations

The entire configuration can be encoded in the URL, making sessions reproducible and shareable, e.g.:

/?s=us-vs-world&q=election OR gaza -opinion

Architecture Overview

Deterministic Chronological Rendering

Items are rendered strictly by timestamp. The system avoids hidden sorting heuristics, prioritizing predictability over automation.

Feed Reliability Handling

RSS feeds can be inconsistent—some omit timestamps, return intermittent 403 responses, or temporarily return empty results. DualTicker preserves the last‑known‑good items during failed refresh cycles to prevent UI collapse.

Frontend Windowing

Large feed volumes can cause scroll limitations if the rendered window is too small. The solution increases the frontend window size to provide sufficient physical scroll runway, addressing layout‑related constraints.

Who This Is For

• People comparing multiple RSS feeds
• Users monitoring news sources in parallel
• Developers building feed‑based dashboards
• Anyone who wants structured chronological visibility

What It Is Not

• A recommendation engine
• A news publisher
• A ranking system

It is a deterministic RSS dashboard.

Availability

• Website:
• Windows desktop build:
• Android app:
• Chrome Extension:

Free to use. Optional one‑time Founder tier unlocks advanced configuration features.

If you build feed systems or deterministic dashboards, feedback on architectural trade‑offs is welcome.