FMTC Deals API 4.2.0 delivers a major performance improvement for subscribers using incremental polling. In testing, API requests using the sincedate parameter completed up to 59 times faster, helping publishers surface new deals sooner, remove expired offers more quickly, and keep deal feeds synchronized with less processing time.

For affiliate publishers, coupon sites, cashback platforms, and other partners that rely on FMTC deal data, faster synchronization means fresher content and a better user experience.

What’s New in Deals API 4.2.0?

Every deal feed integration runs the same essential background task: checking FMTC for changes.

That includes:

  • New deals
  • Expired deals
  • Updated coupon codes
  • Deleted offers
  • Other deal updates

Deals API 4.2.0 dramatically improves the speed of those update checks through a performance enhancement called incremental polling.

What Is Incremental Polling?

There are two ways to keep up with a news feed:

  1. Reread the entire newspaper every time.
  2. Check only what’s new since your last visit.

APIs work the same way.

A full feed request is like rereading the entire newspaper. Incremental polling is like asking:

“What has changed since the last time I checked?”

The FMTC Deals API supports this through the sincedate parameter.

When your integration sends a request with a sincedate, FMTC returns only the deals that have changed since that date and time, rather than processing the entire feed.

Most publisher integrations make these requests every 30 minutes throughout the day. Since each subscriber has a daily API call allowance, incremental polling is the most efficient way to keep deal data current without exhausting API resources.

Real-World Performance Results

We compared performance before and after the release of Deals API 4.2.0.

Client Test v3 v4.2.0 Speedup
A size=10+sincedate 59 seconds 1 second 59x
A size=100+sincedate 227 seconds 4 seconds 57x
B size=100+sincedate 210 seconds 24 seconds 9x
B size=10 (no sincedate) 36 seconds 2 seconds 18x
C size=10+sincedate 105 seconds 27 seconds 4x

The results are substantial.

A subscriber request that previously took nearly four minutes now completes in four seconds. Another request that typically took almost a minute now finishes in a single second.

Calls using the sincedate parameter now return up to 59 times faster.

Why Faster Deal Feed Synchronization Matters

Faster API performance isn’t just about saving time—it directly impacts the quality of your deal content.

With Deals API 4.2.0:

  • New offers appear on your site sooner
  • Expired deals are removed faster
  • Invalid coupon codes disappear more quickly
  • Synchronization jobs finish sooner
  • Visitors encounter fewer dead links and outdated promotions

For affiliate publishers, that means a better user experience, more accurate deal content, and more opportunities to drive conversions.

Who Benefits from Deals API 4.2.0?

These improvements are especially valuable for:

  • Affiliate publishers
  • Coupon and deal websites
  • Cashback and rewards platforms
  • Commerce content publishers
  • Developers maintaining deal feed integrations

Any integration that relies on timely deal updates will benefit from faster incremental polling.

Frequently Asked Questions

What is the FMTC sincedate parameter?

The sincedate parameter allows an integration to request only deals that have changed since a specific date and time. This reduces processing requirements and helps publishers keep deal feeds current more efficiently.

How much faster is Deals API 4.2.0?

In FMTC testing, requests using the sincedate parameter completed up to 59 times faster compared to previous versions.

Do I need to update my integration?

If you are currently using an older version of the FMTC Deals API, we recommend upgrading to version 4.2.0 to take advantage of these performance improvements.

Does Deals API 4.2.0 change the data returned?

No. The primary enhancement in version 4.2.0 is performance. Integrations receive the same deal information while benefiting from significantly faster synchronization times.

Ready to Upgrade?

If you’re using an older version of the FMTC Deals API, now is a great time to switch to Deals API 4.2.0.

You’ll benefit from dramatically faster incremental polling, quicker synchronization jobs, and fresher deal data across your site.

For implementation details, visit the Deals API 4.2.0 documentation. If you have questions about upgrading your integration, please reach out to your account manager.

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