Connecting with the Docker Community– Recap of Our First Community All Hands

Last week, we held our first Community All Hands and the response was phenomenal. A huge thank you to all 1,100+ people who joined. If you missed it, you can watch the recording here. You can also find answers to those questions that came in towards the end that we didn’t have time to answer here.

This all-hands was an effort to further deepen our engagement with the community and bring users, contributors and staff together on a quarterly basis to share updates on what we’re working on and what our priorities are for 2021 and beyond. The event was also an opportunity to give the community direct access to Docker’s leadership and provide a platform to submit questions and upvote those that are most relevant and important to people.

The overwhelming piece of feedback we got from attendees was that the event was too short and people would have loved to see more demos. We certainly had a packed agenda and we did our best to squeeze in as much into an hour. For our next one (in February 2021!), we’ll aim to extend the event by 30 minutes and include more live demos. We’ll also try to make it more interactive and give additional time to answer more questions. If you have any other ideas on how we can improve the all-hands and make it more engaging, don’t hesitate to send me a note on our community slack (@William).

Community events are a key pillar of our community-building strategy and we look forward to experimenting with new types of events like this one to continue pushing for more participation, openness and engagement. Onwards!

#community #community #developers #docker #docker community

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Connecting with the Docker Community– Recap of Our First Community All Hands

Last week, we held our first Community All Hands and the response was phenomenal. A huge thank you to all 1,100+ people who joined. If you missed it, you can watch the recording here. You can also find answers to those questions that came in towards the end that we didn’t have time to answer here.

This all-hands was an effort to further deepen our engagement with the community and bring users, contributors and staff together on a quarterly basis to share updates on what we’re working on and what our priorities are for 2021 and beyond. The event was also an opportunity to give the community direct access to Docker’s leadership and provide a platform to submit questions and upvote those that are most relevant and important to people.

The overwhelming piece of feedback we got from attendees was that the event was too short and people would have loved to see more demos. We certainly had a packed agenda and we did our best to squeeze in as much into an hour. For our next one (in February 2021!), we’ll aim to extend the event by 30 minutes and include more live demos. We’ll also try to make it more interactive and give additional time to answer more questions. If you have any other ideas on how we can improve the all-hands and make it more engaging, don’t hesitate to send me a note on our community slack (@William).

Community events are a key pillar of our community-building strategy and we look forward to experimenting with new types of events like this one to continue pushing for more participation, openness and engagement. Onwards!

#community #community #developers #docker #docker community

Docker Explained: Docker Architecture | Docker Registries

Following the second video about Docker basics, in this video, I explain Docker architecture and explain the different building blocks of the docker engine; docker client, API, Docker Daemon. I also explain what a docker registry is and I finish the video with a demo explaining and illustrating how to use Docker hub

In this video lesson you will learn:

• What is Docker Host
• What is Docker Engine
• Learn about Docker Architecture
• Learn about Docker client and Docker Daemon
• Docker Hub and Registries
• Simple demo to understand using images from registries

#docker #docker hub #docker host #docker engine #docker architecture #api

Hand Sanitizer in bulk - Get your effective hand sanitizer here

With the spread of various harmful virus globally causing immense distress and fatalities to human mankind, it has become absolutely essential for people to ensure proper and acute hygiene and cleanliness is maintained. To further add to the perennial hardship to save lives of people the recent pandemic of Covid-19 affected globally created the worst nightmare for people of all walks of life. Looking at the present crisis, it has become imperative for human beings to be encouraged to tackle this challenge with an everlasting strength to help protect oneself and their loved ones against the devastating effects of the virus. One thing that stands up between keeping all safe and vulnerable is by making sure that everybody attentively Hand wash periodically to help physically remove germs from the skin and getting rid of the live microbes.

The essence of apposite handwashing is based around time invested in washing and the amount of soap and water used. Technically, washing hands without soap is much less effective anyway. But incase a proper handwashing support system doesn’t become possible around, the usage of Effective Hand Sanitizer will certainly help fight to reduce the number of microbes on the surface of hands efficiently, eliminating most variants of harmful bacteria to settle.

The need has come about for Hand Sanitizer in bulk to save your daily life aptly maintaining a minimum of 60% alcohol - as per the CDC recommendations and approved by USFDA for its greater effectiveness. With the growing demand of people on the move the demand for easy to carry, small, and travel size worthy pouches that are also refillable once the product runs out is the need of the hour. To further make sure that human lives are well protected from these external viruses, it is mandatory for producer of effective Hand Sanitizer to evolve products circumspectly with ingredients that produce not just saving lives but with multiple benefits for people of all ages.

#hand sanitizer #hand sanitizer in bulk #hand sanitizer ingredient #hand sanitizer to alcohol #hand sanitizer travel size #hand sanitizer wholesale

PostgreSQL Connection Pooling: Part 4 – PgBouncer vs. Pgpool-II

In our previous posts in this series, we spoke at length about using PgBouncer  and Pgpool-II , the connection pool architecture and pros and cons of leveraging one for your PostgreSQL deployment. In our final post, we will put them head-to-head in a detailed feature comparison and compare the results of PgBouncer vs. Pgpool-II performance for your PostgreSQL hosting !

The bottom line – Pgpool-II is a great tool if you need load-balancing and high availability. Connection pooling is almost a bonus you get alongside. PgBouncer does only one thing, but does it really well. If the objective is to limit the number of connections and reduce resource consumption, PgBouncer wins hands down.

It is also perfectly fine to use both PgBouncer and Pgpool-II in a chain – you can have a PgBouncer to provide connection pooling, which talks to a Pgpool-II instance that provides high availability and load balancing. This gives you the best of both worlds!

PostgreSQL Connection Pooling: Part 4 – PgBouncer vs. Pgpool-II

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Performance Testing

While PgBouncer may seem to be the better option in theory, theory can often be misleading. So, we pitted the two connection poolers head-to-head, using the standard pgbench tool, to see which one provides better transactions per second throughput through a benchmark test. For good measure, we ran the same tests without a connection pooler too.

Testing Conditions

All of the PostgreSQL benchmark tests were run under the following conditions:

1. Initialized pgbench using a scale factor of 100.
2. Disabled auto-vacuuming on the PostgreSQL instance to prevent interference.
3. No other workload was working at the time.
4. Used the default pgbench script to run the tests.
5. Used default settings for both PgBouncer and Pgpool-II, except max_children*. All PostgreSQL limits were also set to their defaults.
6. All tests ran as a single thread, on a single-CPU, 2-core machine, for a duration of 5 minutes.
7. Forced pgbench to create a new connection for each transaction using the -C option. This emulates modern web application workloads and is the whole reason to use a pooler!

We ran each iteration for 5 minutes to ensure any noise averaged out. Here is how the middleware was installed:

• For PgBouncer, we installed it on the same box as the PostgreSQL server(s). This is the configuration we use in our managed PostgreSQL clusters. Since PgBouncer is a very light-weight process, installing it on the box has no impact on overall performance.
• For Pgpool-II, we tested both when the Pgpool-II instance was installed on the same machine as PostgreSQL (on box column), and when it was installed on a different machine (off box column). As expected, the performance is much better when Pgpool-II is off the box as it doesn’t have to compete with the PostgreSQL server for resources.

Throughput Benchmark

Here are the transactions per second (TPS) results for each scenario across a range of number of clients:

#database #developer #performance #postgresql #connection control #connection pooler #connection pooler performance #connection queue #high availability #load balancing #number of connections #performance testing #pgbench #pgbouncer #pgbouncer and pgpool-ii #pgbouncer vs pgpool #pgpool-ii #pooling modes #postgresql connection pooling #postgresql limits #resource consumption #throughput benchmark #transactions per second #without pooling

Docker Captain Take 5 - Gianluca Arbezzano

_Docker Captains are select members of the community that are both experts in their field and are passionate about sharing their Docker knowledge with others. “Docker Captains Take 5” is a regular blog series where we get a closer look at our Captains and ask them the same broad set of questions ranging from what their best Docker tip is to whether they prefer cats or dogs (personally, we like whales and turtles over here). Today, we’re interviewing Gianluca Arbezzano who has been a Docker Captain since 2016. He is a Senior Software Staff Engineer at Equinix Metal and is based in Italy. _

How/when did you first discover Docker?

At this point, it is not easy to pick a date. Four years ago I was in Dublin away from my home town near Turin. The Docker Meetup along with many other meetups were a great opportunity for nerds like me looking for new friends and to grab free pizza while having a good time. Back then I was working for a company that helps businesses move to the cloud. I saw that Docker was a powerful tool to master. Not only was Docker a useful tool and led me to meet a lot of cool people, but it also helped me to become a better open source citizen and enabled me to have some awesome experiences.

What is your favorite Docker command?

I am an old-style Docker user. Many of the new cool commands are unknown to me. One of the powerful combos I use from time to time is still “docker rm -fv $(docker ps -aq)”– I know, there are better ways! It clearly shows how powerful a good CLI tool and the UNIX philosophy are. I love buildkit, so buildx is also something I use a lot.

#community #community #developers #docker captains #docker community