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developer_productivity == developer_joy
// (really!)
Holly Cummins
Senior Principal Software Engineer
Red Hat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
why are you
smiling?
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@holly_cummins
#RedHat
why are you
smiling?
work is not a place
to be happy!
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#RedHat
@holly_cummins
ΑΡΙΣΤΟΤΈΛΗΣ
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#RedHat
@holly_cummins
«τελειοῖ δὲ τὴν
ἐνέργειαν ἡἡδονή»
ΑΡΙΣΤΟΤΈΛΗΣ
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#RedHat
@holly_cummins
«Η ευχαρίστηση στην
δουλειά βάζει την
τελειότητα στην εργασία»
ΑΡΙΣΤΟΤΈΛΗΣ
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#RedHat
@holly_cummins
“Pleasure in the job puts
perfection in the work.”
Aristotle
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#RedHat
@holly_cummins
joy has business value.
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#RedHat
@holly_cummins
the science bit
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#RedHat
@holly_cummins
piglet litters grow faster
if they play more
https://www.flickr.com/photos/tambako/8746156155
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#RedHat
@holly_cummins
job satisfaction is
the no. 1 predictor
of organizational
performance
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@holly_cummins
#RedHat
research shows:
fun is good for
business.
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@holly_cummins
#RedHat
research shows:
fun is good for
business.
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#RedHat
@holly_cummins
https:/
/hbr.org/2012/01/positive-intelligence
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#RedHat
@holly_cummins
“Your brain at positive is 31% more productive
than your brain at negative, neutral or
stressed. "
https:/
/hbr.org/2012/01/positive-intelligence
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
https:/
/www2.warwick.ac.uk/fac/soc/economics/staff/eproto/workingpapers/happinessproductivity.pdf
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#RedHat
@holly_cummins
"Individuals [who just watched a
comedy video] have approximately
12%
greater productivity."
https:/
/www2.warwick.ac.uk/fac/soc/economics/staff/eproto/workingpapers/happinessproductivity.pdf
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@holly_cummins
#RedHat
so how do developers
become productive?
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@holly_cummins
#RedHat
so how do developers
become productive?
joyful?
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@holly_cummins #RedHat
lack of joy
creeps up on us
productivity
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@holly_cummins #RedHat
lack of joy
creeps up on us
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
get rid of boring stuff
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
it’s probably waste
get rid of boring stuff
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
repetitive
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@holly_cummins
#RedHat
meaningless
repetitive
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@holly_cummins
#RedHat
meaningless
repetitive
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@holly_cummins
#RedHat
low-value
meaningless
repetitive
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@holly_cummins
#RedHat
low-value
meaningless
repetitive repetitive
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@holly_cummins
#RedHat
low-value
meaningless
repetitive
repetitive
repetitive
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@holly_cummins
#RedHat
low-value
meaningless
repetitive
repetitive
repetitive
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@holly_cummins
#RedHat
low-value
meaningless
repetitive
repetitive
repetitive
redundant
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@holly_cummins
#RedHat
low-value
meaningless
repetitive
repetitive
repetitive
repetitive
redundant
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@holly_cummins
#RedHat
repetitive
low-value
meaningless
repetitive
repetitive
repetitive
repetitive
redundant
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@holly_cummins
#RedHat
repetitive
low-value
meaningless
repetitive
repetitive
repetitive
repetitive
redundant
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@holly_cummins
#RedHat
manual handoffs
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@holly_cummins
#RedHat
boilerplate code
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@holly_cummins
#RedHat
manual status updates
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@holly_cummins
#RedHat
meetings
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#RedHat
@holly_cummins
“toil”
SRE is a discipline dedicated to eliminating
toil from ops because toil isn’t worth it.
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
make computers
do the hard work
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
make computers
do the boring stuff
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@holly_cummins
#RedHat
(yet)
computers don’t expect to have fun
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@holly_cummins
#RedHat
automation
revenge!
(yet)
computers don’t expect to have fun
happy, lazy developer
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@holly_cummins
#RedHat
bonus: making computers do stuff is really fun
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
automate all the things
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@holly_cummins
#RedHat
what should be automated?
- tasks that are error-prone
- tasks that people can do half-asleep
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
you can do better than bash
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@holly_cummins
#RedHat
there are lots of ways you can do better than bash
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@holly_cummins
#RedHat
you can do a lot better
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
make stuff easy to find
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@holly_cummins
#RedHat
adding developer experience
improvements here is easy
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
bonus: templates automate all the
bits needed to start a new project
(CI, build, boilerplate code …)
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
go beyond infrastructure automation
automate knowledge
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
Guillaume, my CI
was red. Is there a
known failure in the
vertx suite?
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#RedHat
@holly_cummins
Guillaume, my CI
was red. Is there a
known failure in the
vertx suite?
Guillaume, my CI
was red. Is there a
known failure in the
gRPC suite?
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#RedHat
@holly_cummins
Guillaume, my CI
was red. Is there a
known failure in the
vertx suite?
Guillaume, my CI
was red. Is there a
known failure in the
kafka suite?
Guillaume, my CI
was red. Is there a
known failure in the
gRPC suite?
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#RedHat
@holly_cummins
Guillaume, my CI
was red. Is there a
known failure in the
vertx suite?
Guillaume, my CI
was red. Is there a
known failure in the
kafka suite?
Guillaume, my CI
was red. Is there a
known failure in the
gRPC suite?
Guillaume
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#RedHat
@holly_cummins
Guillaume, my CI
was red. Is there a
known failure in the
vertx suite?
Guillaume, my CI
was red. Is there a
known failure in the
kafka suite?
Guillaume, my CI
was red. Is there a
known failure in the
gRPC suite?
the solution? “auto-Guillaume”
Guillaume
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#RedHat
@holly_cummins
the solution? “auto-Guillaume” with develocity
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#RedHat
@holly_cummins
the solution? “auto-Guillaume” with develocity
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#RedHat
@holly_cummins
the solution? “auto-Guillaume” with develocity
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#RedHat
@holly_cummins
the solution? “auto-Guillaume” with develocity
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#RedHat
@holly_cummins
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
go beyond infrastructure automation
make coding better
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@holly_cummins
#RedHat
let’s talk about quarkus
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@holly_cummins #RedHat
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@holly_cummins
#RedHat
Java dynamism
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@holly_cummins
#RedHat
build time
Java dynamism
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@holly_cummins
#RedHat
build time runtime
Java dynamism
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@holly_cummins
#RedHat
build time runtime
Java dynamism
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@holly_cummins
#RedHat
packaging
(maven, gradle…)
build time runtime
Java dynamism
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@holly_cummins
#RedHat
build time runtime
Java dynamism
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@holly_cummins
#RedHat
build time runtime
Java dynamism
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@holly_cummins
#RedHat
>
build time runtime
load and parse
• config files
• properties
• yaml
• xml
• etc.
Java dynamism
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@holly_cummins
#RedHat
>
build time runtime
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
• classpath scanning and
annotation discovery
• attempt to load class to
enable/disable features
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
build a metamodel
of the world
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
start
• thread pools
• I/O
• etc.
Java dynamism
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@holly_cummins
#RedHat
@
@
>
build time runtime
ready to
do work!
Java dynamism
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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>
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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>
@
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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@holly_cummins
#RedHat
what if we start the application more than once?
@
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so much work gets
redone every time
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@holly_cummins
#RedHat
what if we initialize at build time?
@
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build time runtime
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@holly_cummins
#RedHat
what if we initialize at build time?
@
@
>
build time runtime
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@holly_cummins
#RedHat
what if we initialize at build time?
@
@
>
build time runtime
start
• thread pools
• I/O
• etc.
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@holly_cummins
#RedHat
what if we initialize at build time?
@
@
>
build time runtime
ready to
do work!
start
• thread pools
• I/O
• etc.
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
>
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
>
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
>
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@holly_cummins
#RedHat
repeated starts are now efficient
@
@
>
less wasted work
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@holly_cummins
#RedHat
outcome
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@holly_cummins
#RedHat
quarkus applications
outcome
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@holly_cummins
#RedHat
quarkus applications
- start faster
outcome
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@holly_cummins
#RedHat
quarkus applications
- start faster
- use less memory
outcome
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@holly_cummins
#RedHat
quarkus applications
- start faster
- use less memory
- have higher throughput
outcome
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
adding developer experience
improvements here is expensive
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@holly_cummins
#RedHat
adding developer experience
improvements here is expensive
adding developer experience
improvements here is cheap
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@holly_cummins
#RedHat
the dream
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@holly_cummins
#RedHat
don’t make humans tell
the computer what the
computer already knows
the dream
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@holly_cummins
#RedHat
don’t make humans tell
the computer what the
computer already knows
the dream
is now achievable
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@holly_cummins
#RedHat
package com.example;
import org.jboss.logging.Logger;
public class Thing {
private static final Logger log = Logger.getLogger(Thing.class);
public void doSomething() {
log.info("It works!");
}
}
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@holly_cummins
#RedHat
package com.example;
import org.jboss.logging.Logger;
public class Thing {
private static final Logger log = Logger.getLogger(Thing.class);
public void doSomething() {
log.info("It works!");
}
}
import io.quarkus.logging.Log;
Log
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@holly_cummins
#RedHat
public String hello(@QueryParam("name") String name) {
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@holly_cummins
#RedHat
public String hello(@RestQuery String name) {
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#RedHat
@holly_cummins
testcontainers integration … without quarkus
@TestConfiguration(proxyBeanMethods = false)
public class ContainersConfig {
@Bean
@ServiceConnection
public PostgreSQLContainer> postgres() {
return new PostgreSQLContainer<>(DockerImageName.parse("postgres:14"));
}
}
public class TestApplication {
public static void main(String[] args) {
SpringApplication
.from(MySpringDataApplication::main)
.with(ContainersConfig.class)
.run(args);
}
}
@Import(ContainersConfig.class)
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#RedHat
@holly_cummins
testcontainers integration … without quarkus
quarkus
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@holly_cummins #RedHat
what if…
you could inherit boilerplate
Hibernate queries from a
superclass, instead of
having to write them all?
example: hibernate
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@holly_cummins
#RedHat
@ApplicationScoped
public class GreetingRepository {
public Entity findByName(int name) {
return find("name", name).firstResult();
}
void persist(Entity entity) {}
void delete(Entity entity) {}
Entity findById(Id id) {}
List list(String query, Sort sort, Object... params) {
return null;
}
Stream stream(String query, Object... params) {
return null;
}
long count() {
return 0;
}
long count(String query, Object... params) {
return 0;
}
}
example: hibernate with panache
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@holly_cummins
#RedHat
DAO
@ApplicationScoped
public class GreetingRepository implements PanacheRepository {
public Entity findByName(int name) {
return find("name", name).firstResult();
}
}
example: hibernate with panache
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@holly_cummins
#RedHat
machine efficiency unlocked human efficiency
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@holly_cummins
#RedHat
machine efficiency unlocked human efficiency
and human joy
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@holly_cummins
#RedHat
this isn’t using gen AI to automate code generation
this is making the need for the code go away
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
70%
unnecessary
code
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@holly_cummins
#RedHat
70%
unnecessary
code
code isn’t an asset
it’s a liability
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@holly_cummins
#RedHat
but if you do have to write boring code …
gen AI can help a lot.
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@holly_cummins
#RedHat
but if you do have to write boring code …
gen AI can help a lot.
gen AI can (sometimes) help a lot.
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#RedHat
@holly_cummins
measurement
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#RedHat
@holly_cummins
don’t just shift work
from the measured pile
to the unmeasured pile
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#RedHat
@holly_cummins
don’t just measure what
is easiest to measure
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#RedHat
@holly_cummins
we can measure
“time at the
computer!”
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#RedHat
@holly_cummins
we can measure
“time at the
computer!”
desks are not the only
place value is created
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#RedHat
@holly_cummins
we can measure
“time at the
computer!”
desks are not the only
place value is created
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
14% took showers
specifically for the purpose
of coming up with ideas
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#RedHat
@holly_cummins
I am most
productive while
- showering
- running
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#RedHat
@holly_cummins
I am most
productive while
- showering
- running
this slide was
written while running
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@holly_cummins
#RedHat
→ productivity tip for the lazy, happy, developer
use voice memo to capture all
the work you do while running
* the text on this slide was originally a voice memo
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
but what if you’re not debugging-
in-your-head while running?
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@holly_cummins
#RedHat
but what if you’re not debugging-
in-your-head while running?
what if you’re feeding chocolate
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@holly_cummins
#RedHat
but what if you’re not debugging-
in-your-head while running?
what if you’re feeding chocolate
into the office fan, to see what happens?
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
we work in a creative industry
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@holly_cummins
#RedHat
we work in a creative industry
play helps creativity
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#RedHat
@holly_cummins
creativity brings us joy
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@holly_cummins
#RedHat
productivity
happiness
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@holly_cummins
#RedHat
it’s not a trade-off.
productivity
happiness
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@holly_cummins
#RedHat
it’s not a trade-off.
productivity
happiness
it’s a double-win.
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@holly_cummins
#RedHat
ours is the only profession
where “lazy” is a compliment
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@holly_cummins
#RedHat
we need to make it a profession
where “happy” is also a compliment
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
takeaways
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#RedHat
@holly_cummins
takeaways
- joy has business value
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#RedHat
@holly_cummins
takeaways
- joy has business value
- get rid of dumb work
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#RedHat
@holly_cummins
takeaways
- joy has business value
- get rid of dumb work
- if you can’t get rid of the work, make computers
do the work
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#RedHat
@holly_cummins
takeaways
- joy has business value
- get rid of dumb work
- if you can’t get rid of the work, make computers
do the work
- don’t make humans tell the computer things
the computer already knows
Slide 170
Slide 170 text
#RedHat
@holly_cummins
takeaways
- joy has business value
- get rid of dumb work
- if you can’t get rid of the work, make computers
do the work
- don’t make humans tell the computer things
the computer already knows
- get rid of flab from the programming model
(like quarkus does!)
Slide 171
Slide 171 text
#RedHat
@holly_cummins
takeaways
- joy has business value
- get rid of dumb work
- if you can’t get rid of the work, make computers
do the work
- don’t make humans tell the computer things
the computer already knows
- get rid of flab from the programming model
(like quarkus does!)
- measure the important metric, not the one that’s
easy to measure