Errata
The errata list is a list of errors and their corrections that were found after the product was released.
The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.
Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update
Version | Location | Description | Submitted by | Date submitted |
---|---|---|---|---|
Other Digital Version | ~253 Figure 12-1 |
1. "kittens" |
Almer T. | Feb 05, 2021 |
Chapter 12. Introducing Non-Abstract Large System Design Figure 12-3. Sharding of logs with same query_id to duplicate shards |
The box for Log Sharder contains a typo "hash(as_id)" should be "hash(ad_id)": |
Lan Laucirica | Feb 12, 2021 | |
Other Digital Version | 2 Table 2.2 |
In the book, "Site Reliability Workbook" -- chapter 2, Table 2.2 -- there is a mismatched parentheses.. |
Gururaj Krishnan | Nov 18, 2020 |
Printed, PDF | Page 34 top (1st paragraph) |
"Here we see that a single event consumed around 15% of the |
Florian Rathgeber | Mar 15, 2021 |
Page 41 1st paragraph |
So if the service offers a 99.9% availability (0.1% Error budget) and we replicate it, now that's in two zones it would offer 99.99% because (0.1 * 0.1 = 0.01; 100 - 0.01 = 99.99). |
Alejandro Colomina | Nov 13, 2018 | |
Printed | Page 77 graph |
The graph https://landing.google.com/sre/workbook/chapters/alerting-on-slos/#detection-time is incorrect. It is a lin-log graph, and they have wrongly omitted the first unit on the x scale which presumably is 0.1%. If that is the case, then the detection time for 0.1% is also incorrect, which should be 10, not ~8.5. |
Karl Johan Grahn | May 30, 2019 |
Printed | Page 78 middle |
The detection time equation is mentioned first in the section "Increased Alert Windows", which is too late and makes it very confusing on first reading. It is also incorrect since the equation holds for the graph in the previous section "Target Errror Rate greater than SLO Threshold". |
Karl Johan Grahn | May 30, 2019 |
Printed | Page 79, 80 graphs |
The graphs on the mentioned pages are incorrect, they have a logarithmic y-scale with zero, which is mathematically impossible. It should presumably be 0.01%, not 0.0%. |
Karl Johan Grahn | May 30, 2019 |
Printed | Page 107 Last paragraph |
Broken link to clos topology |
Jens Heinrich | Jul 16, 2020 |
Page 209 The first action item in Table 10-5. Cleanup/miscellaneous |
"bring the admin server backup" should be read as "bring the admin server back up"? i.e. backup vs. back up |
Kazushige Hosokawa | Feb 19, 2019 | |
Printed, Other Digital Version | Page 249 List item "ad_id" |
The text |
James Youngman | Jun 25, 2019 |
Printed | Page 257 Figure 12-3 |
it should say "ad_id::hash(ad_id)" instead of ad_id::hash(as_id)" |
Jens Heinrich | Aug 14, 2020 |