Join Sven and learn how great software teams measure and improve their developer experience, coordinate work across teams, run autonomous but highly aligned teams, and create a healthy and joyful engineering culture. Always backed up by data (not driven) instead of opinions.
The talk will demonstrate how great teams faced development challenges, reinvented themselves, and created new ways of working to get s%*t done. Without losing sight of what makes this craft fun for engineers.
22. of dev time used for
10%
of dev teams manage
42% TECHNICAL
DEBT
23. of dev time used for
10%
of dev teams manage
42% TECHNICAL
DEBT
24. It all starts out
nicely
package com.miguelcatalan.materialsearchview;
import android.app.Activity;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import java.lang.re
fl
ect.Field;
import java.util.List;
/**
* @author Sven Peters
*/
public class MaterialSearchView extends FrameLayout implements Filter.FilterListener {
private MenuItem mMenuItem;
private boolean mIsSearchOpen = false;
public MaterialSearchView(Context context) {
this(context, null);
}
public MaterialSearchView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
mUserQuery = s;
startFilter(s);
MaterialSearchView.this.onTextChanged(s);
}
}
25. It all starts out
nicely
/**
* Return true if search is open
*
* @return
*/
public boolean isSearchOpen() {
return mIsSearchOpen;
}
/**
* Open Search View. This will animate the showing of the view.
*/
public void showSearch() {
showSearch(true);
}
/**
* Open Search View. if animate is true, Animate the showing of the view.
*
* @param animate
*/
public void showSearch(boolean animate) {
if (isSearchOpen()) {
return;
}
//Request Focus
mSearchSrcTextView.setText(null);
mSearchSrcTextView.requestFocus();
if (animate) {
AnimationUtil.fadeInView(mSearchLayout, AnimationUtil.ANIMATION_DURATION_MEDIUM
@Override
public boolean onAnimationStart(View view) {
return false;
}
26. /**
* Return true if search is open
*
* @return
*/
public boolean isSearchOpen() {
return mIsSearchOpen;
}
/**
* Open Search View. This will animate the showing of the view.
*/
public void showSearch() {
showSearch(true);
}
/**
* Open Search View. if animate is true, Animate the showing of the view.
*
* @param animate
*/
public void showSearch(boolean animate) {
if (isSearchOpen()) {
return;
}
//Request Focus
mSearchSrcTextView.setText(null);
mSearchSrcTextView.requestFocus();
if (animate) {
AnimationUtil.fadeInView(mSearchLayout, AnimationUtil.ANIMATION_DURATION_MEDIUM
@Override
public boolean onAnimationStart(View view) {
return false;
}
Sometimes it
ends in a mess
}
30. Class names
Are CamelCase
Prefix private variables with underscore
Private variables
Single Responsibility Principal
A class should have one and only one job
Don’t assemble String with +
Use either .format or % instead
No line longer than 120 characters
Line length
Don’t use line continuations
Break up long lines using parentheses ()
No Tabs
4 spaces are for indention
Are lowercase. The can contain underscores
Variables and function name
Python Coding Guidelines
47. Build & Test
TEST FAILED
Re-run Test
TEST PASSES
Create PR
.skip test
Add comment to PR
Flaky Test
Detector
Flaky Test
FlakeOff
Houston, we have a flaky test
55. Open Pull Request
Fixing height of the screen
Open Pull Request
Adding user setting functionality
Open Pull Request
Optimising performance for chrome
@alice
@tom
@alice
@tanja
@mark
Puneet Arora
Team lead
56. Open Pull Request
Fixing height of the screen
Open Pull Request
Adding user setting functionality
Open Pull Request
Optimising performance for chrome
@alice
@tom
@alice
@tanja
@mark
Puneet Bot
87. If you can’t measure it,
you can’t improve it.
Peter Drucker
88. Time To Restore
Change Failure Rate
Start with DORA
Lead time for changes
Deployment Frequency
89. Ticket Cycle Time
From idea to deployment
How often do we deploy code to production
Deployment Frequency
Wait Time
Total of build time, deploy time, etc..
Keeping the lights on
Time spend on bugs, infra, etc.
Ratio between successful and failed deploys
Change Failure Rate
Bug resolutions
Critical bugs fixed
Incident Response Time
How fast are we reacting?
What’s the time to bring a service up again
Time to Restore
Important for the team?
100. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
101. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
102. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
103. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
104. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
105. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
106. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
107. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
108. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
109. Measuring
Developer Joy
Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
110. Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
Satisfaction
111. Speed to ship quality code
Waiting time
Execution independence
Access to tools, processes, and practices
Effort managing external standards
Managing code, pipeline, infrastructure
Ramp up time
Developer satisfaction
Importance Satisfaction
112. Satisfaction
Importance
Ramp up time
Wait time
Speed to ship
Managing code,
tools , pipelines
Access to tools
Execution independence
Managing external standards
Developer satisfaction