Fixed: issue with showing thumbnails of pictures

With our most recent update (which was yesterday), we have fixed a problem with thumbnails of attached images not showing correctly. (Not always, but sometimes.)

Here’s what the problem used to look like:

Example of a missing update

As you can see, this card has two images attached. The first one doesn’t show a thumbnail properly (it has a standard “missing image” icon instead) while the second one works fine.

The underlying cause for this was a mismatch in the duration for which Kerika was caching the thumbnail of an attachment after it had first been retrieved from Google Drive, and how long Google Drive was keeping the thumbnail around.

So you never saw the problem when you first attached an image, but if you went back to the card after 30 days you would see the “missing image” icon instead.

We have fixed this. You may still see this if your browser is caching old thumbnails; you can completely eliminate the problem by clearing your browser’s cache, which would force Kerika to request new thumbnails from Google.

Why our new mobile app is taking so long to build

We have been working for months now on our new mobile app, and it has been a tough slog! We are building it entirely using React (a Javascript framework) to make it possible to have a single code base across both desktop and mobile devices, and across all operating systems.

We took some time learning to be good with React: previously we had used Polymer, and before that we used JQuery, so there was some learning curve to traverse while we figured out the right way to code in React. But we are beyond that now.

For the past couple of months, it is really performance that has been our bugbear. In the spirit of “eat your own dogfood before trying to sell it”, we are using the emerging mobile app for our own work on a daily basis.

The trouble is: our main Kerika board is huge: it has usually around 600 cards, and 26 columns. This isn’t best practice, by the way, and we are not recommending you create boards like this, but we are talking here about our main board that tracks many different ideas and initiatives, not just product development.

So, when using our mobile app for our own board, we hit performance problems that few of our users are likely to encounter. We could, of course, have written us off as an edge case and ignored the performance issues, because for smaller boards (e.g. with around 20-30 cards), these performance problems completely disappear.

But, we decided to bite the bullet and get our mobile app to be good even with boards that are as wide and deep as our main board. And we have learned a lot from that experience: for example, it wasn’t the number of cards, but the number of columns that had the bigger performance impact.

We have another board with over 2,500 cards in just 2 columns (essentially a historical record of old work items) and we didn’t experience performance problems in the same way as we did with 500-600 cards over 26 columns. In fact, we found that 2,500 cards in 2 columns was much easier to handle than the latter case!

So, a lot of our efforts over the past few months have been trying to handle performance for scenarios that are out of the norm.

We are doing our testing on both iOS and Android at the same time, to catch browser-specific issues early. (We have been less diligent about Firefox testing, to be frank, but we expect clearing iOS and Android issues will effectively cover Firefox as well, making our final testing easier.)

Our end goal is a single code base that runs on any device. Right now that’s not true: our desktop experience is still using (mostly) Polymer, while our mobile is entirely in React, but we are trying to make sure we design all of the new code to work well on the desktop as well, so that we can slowly replace parts of the desktop code as we build the new mobile app.

(It’s not that our desktop code has any problems today — we are very confident about the quality of our desktop user experience — it’s just that we are too small a team to be able to split ourselves into multiple sub-teams to support every platform.)

Here’s a composite view of what our mobile app looks like now: in “zoomed-in” view, in “zoomed-out” view, and card details:

Kerika's upcoming mobile app

Onwards!

Guarding against XSS/code-injection

It’s possible to copy-paste text into a Kerika Chat message, and there are legitimate use-cases for this: for example, a developer may ask a question to a coworker who replies with a code snippet.

Kerika handles code in chat messages by storing two versions of the message: as plain-text, and as the original format. When a chat message is displayed, the original format is used but not executed, which means the embedded code is visible, but doesn’t run in the browser. This makes it easy and safe to share code snippets through chat messages.

While making this improvement, we went through all the places where a user can type in text, Card Title and Description, Board Name and Description, Tag, Attachment Name, etc. to make sure we are guarding against malicious code injection.

An easier way to search for cards by number

Along with the recent improvements we made to the Auto-Number Cards feature for Task Boards and Scrum Boards, we have also made it easier for you to search for cards by their number.

It’s simple to use: just type in a number in the Search box on the top of the Kerika app and Kerika will assume you are looking for a card with that number. It will also search for anything else with that number, but will prioritize a card matching that number as the first result it shows.

An improved way to number cards

With our latest release we have introduced a new way to have your Task Board and Scrum Board cards numbered automatically.

Our original implementation was rather rudimentary: if you turned on Auto-Numbering (which you can access from the Board Settings dialog, by clicking on the gear icon/button on the top-right of the Kerika app), Kerika would automatically insert a card number as part of each new card’s title.

You can turn on auto-numbering of cards on Task Boards and Scrum Boards using the Board Settings dialog.
Turning on Auto-Numbering of Cards

The card numbers inserted by Kerika were pure text that was prefixed to whatever you typed in as a card title. This meant that they could easily be changed by any Team Member (or Board Admin), and this, in turn, meant that what you saw as a card number couldn’t be completely relied upon as the real/original number of that card. A coworker could have easily edited that number to something quite different.

An example of card numbers.
An example of card numbering.

To make these numbers more reliable and trustworthy, Kerika now keeps the card number as a separate attribute (field) of each card: it is shown, when Auto-Numbering has been turned on for a board by it’s Board Admin, but it cannot be edited by anyone.

With card numbers being stored as a separate attribute of each card, we are also adding an improved way to search for cards by their numbers: if you type in a number in the Search box inside Kerika, the system will first look for a card with that number before showing any other results.

Card Numbering in Scrum Boards

Card numbers are always unique to each board: a card with number 100 on Board A will have no relation with a card numbered 100 on Board B. Each board will keep track of its own numbering, starting with “1”.

So what happens with Scrum Boards? Scrum Boards are different from regular Task Boards in that they let you share a backlog across multiple Scrum Boards. This lets you run several Sprints one after another, with each Sprint drawing from the same shared Backlog.

(And, of course, this also makes it possible to run several projects at the same time that draw from the same shared backlog.)

Since each board keeps track of its own sequence of card numbers, if you move a card from a Scrum Board back to the Backlog column it will lose the number it previously had.

That’s because once a card goes back into a shared backlog, we can’t be sure which board it will get pulled into the future: the card may return to the same board where it was originally located, or it may get pulled into a different Scrum Board.

The smart approach in this situation is to reset card numbers when cards go back to a backlog.

Virtual Teams: How to Make Them Succeed

At this year’s Lean Transformation Conference in Tacoma, Washington, Arun Kumar spoke on the subject of “Virtual Teams: How to Make Them Succeed”.

A synopsis of the presentation:

Virtual teams can be as successful, even more so, than traditional (collocated) teams – but you need to understand how the project dynamics change when everyone can’t be in the same room at the same time. In this session we will cover the key success factors to building a high-performing virtual teams: how you can plan your work, run your daily standups, communicate, and share content. We will discuss the different roles and expectations of Project Leaders, Team Members and Visitors, and how people can juggle multiple projects at the same time.

The presentation was an hour-long, including Q&A; here’s an edited version of the talk (about 45 minutes long.)

https://youtu.be/J4Pc7Xs7rlQ
Arun Kumar, on how to Make Virtual Teams Succeed