Reading Time: < 1 minute I am thinking about this, also there was an ask from two parents. Some of the things I think I can start at first class, also some of the things I am thinking about teaching (more systematic). Starter: raspberry pi (and micro bit), coder master (Sophia’s game), the lego technic motor sets (not coding but
Reading Time: 3 minutes For 12 factor application the No. 1 principle is one source code base. Today I was thinking about this topic: one sets of source code for one app, and use configuration for language, region or other different settings for different customers. And this reminded me of some of the articles I read (such as this
Reading Time: 2 minutes Downloaded Noobs image installer (imager_1.6.2) to Mac, unpack (or install) so that I have “Raspberry Pi Imager” on Mac, and then used it to create the bootable OS on the sd card using that software. After that insert the sd card to the appropriate slot on p3, also plugged in hdmi for monitor, and usb
Reading Time: < 1 minute (Update 4: 01-21-2022) Roblox published the root cause here. (Update 3: 11-03-2021) I came across this website that shows nice stats for Roblox (I noticed downdetector only shows 24 hours history by default, not sure how to customize it). I vaguley recall I also see a github repo that can scan the roblox APIs, but
Reading Time: 2 minutes In a little over last year or so, I was involved in many technical interviews, and sometimes hiring decisions (one vote only, but a No vote is usually a No for the candidate). This is quite different from normal technical contributor’s job. But I learn something from this process too. I think overall I had
Reading Time: < 1 minute Keytool The Most Common Java Keytool Keystore Commands import keytool -import -trustcacerts -alias root -file Thawte.crt -keystore keystore.jks (or cacerts) (keytool -keystore $CACERTS_STORE -storepass changeit -importcert -alias jfrog.root -file jfrog.root.cer -noprompt) list keytool -list -v -keystore $JAVA_HOME/jre/lib/security/cacerts create mulesoft keytool -genkey -keyalg RSA -alias <key-alias> -keystore <keystore-name>.jks sslshopper keytool -genkey -keyalg RSA -alias mydomain -keystore
Reading Time: < 1 minute https://brandur.org/postgres-connections https://news.ycombinator.com/item?id=18220906 https://github.com/brettwooldridge/HikariCP/wiki/About-Pool-Sizing
Reading Time: < 1 minute (Update 12-10-2020) Ran the DataFusionQuickstart from Data Fusion Hub. Need to make sure the compute@developer service account have the following roles: BigQuery AdminCloud Data Fusion RunnerDataproc WorkerService Account UserStorage Admin then the datafusion user service account still has “Service Account User” role (this is same as below). The big query and storage roles are needed
Reading Time: < 1 minute (Update 12-16-2023) On AWS a competing technology is cloudformation. The nice thing about TerraForm is it supports multi-cloud (AWS, Azure and GCP, and more). (Original 2020) Doing Prepare for Certification Get Started – AWS : below has some issues, cannot find the image. Note I tried to find correct ami image id too (ami-032930428bf1abbff, via
Reading Time: < 1 minute Sometimes we need to get something done without the distraction of facebook, twitter or for that matter, linkedin (or some other sites you want to stay away). Here is a tip for how to do it on Mac. sudo vi /etc/hosts(note you don’t have to use vi, feel free to use nano or other editor
Recent Comments