small medium large xlarge

The latest version of the book is B5.0, released 22 days ago. If you've bought a PDF of the book and would like to upgrade it to this version (for free), visit your home page.

By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:

If you've found a new error, please submit it.

  • Typo
  • Tech. error
  • Suggestion
  • Maybe next edition
  • Not a problem
  • Reported in: B1.0 (30-Aug-17)
#82001
PDF page: n/a
In discussing anti patterns, you note that library or package dependencies can lead to difficulties. Agreed. Or company has an explicit policy to min...more...
  • Reported in: B4.0 (24-Oct-17)
  • Fixed: 29-Nov-17, awaiting book release
#82182
PDF page: 1-400

All images are black boxes in epub version.
Read on iBooks in Mac
--Stanislav Bytsko

  • Reported in: B2.0 (12-Sep-17)
  • Fixed: 29-Nov-17, awaiting book release
#82064
PDF page: 5
In the epub and mobi versions, the images are ony black and white outline. It is not possible to recognize the content of the image. Within the pdf ve...more...
  • Reported in: B5.0 (28-Nov-17)
#82321
PDF page: 12
it was can be dangerous because calls cannot be made to time out. Should be it can be dangerous because calls cannot be made to time out.--Harri Jau...more...
  • Reported in: B5.0 (19-Nov-17)
  • Fixed: 29-Nov-17, awaiting book release
#82274
PDF page: 27
Even in latest version (5), the quality of images in pdf is vastly better then in epub: Compare (images on imgur): imgur.com/a/vVvOQ--Stanislav Byts...more...
  • Reported in: B4.0 (18-Nov-17)
#82269
PDF page: 187
Paper page: 172
There seems to be the mismatch between IP addresses on the figure describing working of a DNS round-robin mechanism. In the figure the DNS server firs...more...
  • Reported in: B3.0 (24-Oct-17)
  • Fixed: 29-Nov-17, awaiting book release
#82181
Paper page: 2711

Diagrams do not render properly in the mobi format (for kindle readers) : most shapes are black boxes. --Tristan Lescut