I often hear business owners say, “My rankings changed today, so Google must have released an update.” Sometimes that's true. Most of the time, it isn't. Rankings move a little almost every day, and the reason goes back to a change Google made in the summer of 2003.
The SEO community called it the Fritz update. Before Fritz, Google rebuilt its index about once a month and rankings jumped in one big shuffle. After Fritz, Google refreshed part of its index nearly every day, and rankings started to move in small steps all the time. It sits in our timeline of every Google algorithm update right after Esmeralda, the last of the monthly updates.
Unlike most 2003 updates, Fritz was later explained by a Google engineer, so we know more about it. Let me walk you through what changed, what “everflux” means, and how to tell normal daily movement from a real problem on your own site.
Fritz update at a glance
| Question | Answer |
|---|---|
| When | July 2003 in the SEOmoz history quoted by Search Engine Roundtable and Search Engine Land; “summer 2003” in Barry Schwartz's list and in Matt Cutts's posts |
| Type | Indexing infrastructure change |
| Confirmed by Google? | Yes, later: Matt Cutts named “Update Fritz” in 2006 and 2007 blog posts |
| What it changed | Monthly batch index updates replaced by incremental, near-daily updates |
| Who was affected | Every site in Google's index; rankings began moving daily |
| Legacy | The start of “everflux” and of rankings as a moving picture |
Batch vs incremental indexing, in plain words
Think of Google's index as a huge library catalog. There are two ways to keep it up to date.
- Batch updating: once a month, you print a whole new catalog and swap it in. Between swaps, nothing changes much. On swap day, everything changes at once.
- Incremental updating: every day, you update a few drawers of the catalog. No single day changes much, but the catalog is always fairly current.
Before Fritz, Google used the batch approach. Matt Cutts wrote that from summer 2000 to summer 2003 index updates happened about once a month and took 6 to 8 days, because each data center had to be taken out of service and loaded with “an entirely new web index.” That week of shifting results was the Google Dance.
Fritz moved Google to the second approach. Wikipedia’s timeline describes it as a move “towards continuous rather than batch processing of updates.” A 2023 history by Ranked AI calls it “the first formal announcement” of Google's shift from monthly to incremental updates.
What Google has said about Fritz
This is the part that makes Fritz different from Boston, Cassandra and Dominic. We have a Google engineer describing it. In his August 2007 post on fresh indexing, Matt Cutts asked readers to raise a hand if they remembered “Update Fritz” from summer 2003, and explained that Google “switched from a monthly batch update to an incremental update.” He added that Google then “updated a fraction of our index daily or near-daily.”
In his December 2006 post, he described the effect on results:
“Instead of a monolithic monthly event, the Google would refresh some of its index pretty much every day, which generated much smaller day-to-day changes that some people called everflux.”
— Matt Cutts, Matt Cutts: Explaining algorithm updates and data refreshes (December 23, 2006)
(The “the Google” wording is his, quoted as written.) In the same post, he noted that terms like “Google Dance” and “everflux” were rarely used anymore, and that most SEOs talked instead about algorithm updates and data refreshes.
What webmasters saw in the first weeks of rolling updates
Forum threads from August 2003 show people trying to make sense of the new rhythm. In a WebmasterWorld thread titled “Rolling Update Observations”, members reported:
- Pages fetched by Googlebot appeared in results and in Google's cache within about 48 hours.
- One member believed Google had turned all its crawlers into “fresh bots”; another said “all bots are now deepfresh crawlers.”
- Some saw regular fresh crawling with deeper crawls on weekends; others saw deep crawls at random times.
- Backlink and PageRank changes seemed to show up on certain days, though not everyone agreed.
- One site saw its indexed pages roughly double, from about 11,000 to over 22,000, within days.
These are individual observations, not measured data, and members contradicted each other. But they agree on the main point: changes now showed up in days, not weeks. Months earlier, in a May 2003 thread, WebmasterWorld's founder Brett Tabke had floated “Liquid PR” for exactly this idea of continuous updating. By August, it was reality.
Freshbot's dates in results also became part of the picture. Barry Schwartz later reported, in a 2004 Search Engine Roundtable post, that a date beside a result appeared only when the current date was within a few days of the crawl date.
The “everflux” idea, and why it never went away
Everflux was the name for small, constant ranking changes. The word faded, but the effect only grew. Since Fritz, Google has made its index fresher and its systems more dynamic, so daily movement is now completely normal.
Here is why your rankings move even when no update has been announced:
- Google recrawls and reindexes pages all the time, yours and your competitors'.
- Competitors publish, update and earn links, which changes the relative picture.
- Google's data refreshes, which Cutts described as changes to data within an existing algorithm, happen without announcements.
- Results vary by location, device and search features, so one check is never the whole story.
I go deeper into this in why rankings change between announced updates.
How Fritz changed SEO monitoring
| Before Fritz (monthly) | After Fritz | Today (2026) | |
|---|---|---|---|
| When to check rankings | During and after the monthly dance | Any day | Continuously, with tools and Search Console |
| What a change meant | A new index went live | Could be fresh data or noise | Usually normal movement unless sustained |
| How long changes took to show | Often a month or more | Days | Hours to days for crawling; longer for Google to reassess quality |
| Where updates were discussed | Monthly forum threads | Ongoing forum threads | Google's Search Status Dashboard for confirmed updates, plus industry news |
A worked example: separating everflux from a real drop
Here is a hypothetical example of how I would read a ranking change today, using the lesson of Fritz. Say your service page usually ranks around position 5 for your main keyword.
- Day 1: it shows at position 9. Don't act yet. A single-day move of a few positions is often everflux.
- Days 2 to 7: it moves between 6 and 8. Look at the 7-day average, about 7. That is a small dip, worth watching.
- Days 8 to 28: compare 28 days against the previous 28 in Search Console. If clicks fell from 600 to 560 (about 7 percent) and average position went from 5.2 to 6.1, that is a mild, real decline.
- Check the cause: was there a confirmed update in that window? Did crawling or indexing change? Did a competitor publish a stronger page? Did you change the page?
- Act on the cause, not on the day-one number.
If clicks had dropped by half and stayed there, that is a different story, and it deserves a proper audit. Our guide to tracking keyword rankings accurately explains which movements to ignore, and our free lesson on rank tracking covers the basics.
Fritz and the indexing changes that followed
Fritz was the first big step toward the always-fresh index we have now. Here is how the path continued:
| When | Change | What it did |
|---|---|---|
| June 2003 | Esmeralda | Last regular monthly update |
| Summer 2003 | Fritz | Incremental, near-daily index updates |
| September 2003 | Supplemental index | Per Wikipedia, a secondary index so some parts of the web could be indexed more rapidly; later scrapped |
| November 2003 | Florida | A major ranking shake-up, now arriving without the monthly rhythm |
| June 2010 | Caffeine | A new index updated continuously in small portions |
When Google launched Caffeine, it said the new system analyzed the web “in small portions” and updated the index “on a continuous basis, globally.” Google added that “Caffeine provides 50 percent fresher results for web searches than our last index.” You can think of Fritz as the first version of that idea.
Lessons from Fritz for 2026
- There is no “update day” to wait for, except for confirmed core and spam updates. Good changes can help within days; most quality signals take longer.
- Small daily moves are normal. Look at weekly and 28-day trends.
- Freshness is real but limited. Updating a page gets it recrawled faster; it doesn't guarantee higher rankings.
- Keep a change log. Note site changes and known updates so you can match causes to effects.
Questions people ask about the Fritz update
What was the Fritz update?
Fritz was the name for the summer 2003 change in which Google stopped rebuilding its whole index once a month and started refreshing part of it every day or so. Matt Cutts later described it as the switch “from a monthly batch update to an incremental update.”
Did Google confirm Fritz?
Yes, though not at the time in a formal announcement. Matt Cutts, then at Google, referred to “Update Fritz” by name in blog posts in 2006 and 2007 and explained what it changed. That makes it one of the better-documented 2003 updates.
What does “everflux” mean?
Everflux was the nickname for the small day-to-day ranking changes that appeared once Google refreshed parts of its index daily. Matt Cutts wrote that the term later fell out of use, but the effect never went away. Daily ranking movement is normal.
Is Fritz the same as Caffeine?
No. Fritz in 2003 moved Google from monthly to incremental, near-daily index updates. Caffeine in 2010 was a new indexing system that updated the index continuously in small portions, and Google said it delivered 50 percent fresher results than the previous index.
How to read your rankings in a post-Fritz world
In brief: Fritz in summer 2003 ended Google's monthly batch updates and moved it to incremental, near-daily index refreshes. Matt Cutts later confirmed it by name. It is the reason rankings move a little every day, and the reason a single day's drop is rarely worth panicking over.
If your rankings have changed and you can't tell whether it is normal movement or a real problem, contact our team. We will review your data with you and give you a clear, honest answer. You can also read more about our SEO services.
Google updates around the same time
Before this update:
- The Esmeralda Update (June 2003): The End of the Monthly Google Dance (Jun 2003)
- The Dominic Update (May 2003): When Google Changed How Backlinks Counted (May 2003)
After this update:
- The Florida Update (2003): The Shake-Up That Ended Old-School SEO (Nov 2003)
- The Austin Update (January 2004): Florida's Sequel Against On-Page Tricks (Jan 2004)
Or browse every Google update on one timeline, newest first.
Sources for this Fritz update history
- Matt Cutts: Explaining algorithm updates and data refreshes (December 23, 2006)
- Matt Cutts: Minty fresh indexing (August 7, 2007)
- Timeline of Google Search (Wikipedia)
- Ranked AI: How Google's Updates Affect Businesses, Part 1, 2000-2005 (June 2, 2023)
- WebmasterWorld: “Rolling Update Observations” (August 2003)
- WebmasterWorld: “Possible explanation? Regarding Google's recent activities” (May 15, 2003)
- Search Engine Roundtable: comparing Google update lists
- Search Engine Land: Major Google Updates Documented
- Search Engine Roundtable: Freshbot Date on Google SERPs (April 29, 2004)
- Official Google Blog: Our new search index, Caffeine (June 8, 2010)
- Google Search Status Dashboard
