I am passionate about technological details and how things work under the hood. Recently I didn’t get confirmative answers from AWS. I spent a half day to re-read the famous paper. and the new one Amazon DynamoDB: A Scalable, Predictably Performant, and Fully Managed NoSQL Database Service. I think the following several concepts can be helpful to under its predictable performance. Consistent Hashing and zero hop DHT storage node and 10G partition Typical flow of putItem I also put all of the three pictures into a slides and put refereneres at the last slides.

I used mindmap in my logseq, however it show left to right side, the start node is always at the left side. I prefer to have the main concept shown in the center. Jsmind is the perfect fit after I saw its demos. Here is I create a shortcode in my hugo and try to create a demo mindmap using jsmind. "\n{\n \"meta\":{\n \"name\":\"jsMind remote\",\n \"author\":\"hizzgdev@163.com\",\n \"version\":\"0.2\"\n },\n \"

Best practice or "aws configure" will put ~/.aws/config and ~/.aws/credentials in the 600 mode. however if you follow Developing using a Docker image, you will get several errors e.g. cant' find region, reach endpoints, or no access to resources. I run docker command as a normal user, docker daemon run as root user. The below scripts will run a docker image which default user is glue_user (10000). the mounted volume ~/.

I tried to use tikz in my logseq. However it fails to render correctly. Today I have time to try it in my hugo sites. Here is a demo from https://tikzjax.com/ \begin{tikzpicture} \draw (0,0) circle (1in); \end{tikzpicture} )

Microsoft FHIR Server serialize searchindices this way in cosmosdb. How to model it in AWS DynamoDB? { "id": "9240cda7-bbb7-4ad4-aa9f-971750a3dc71", "searchIndices": [ { "p": "_id", "c": "9240cda7-bbb7-4ad4-aa9f-971750a3dc71" }, { "p": "_lastUpdated", "st": "2018-08-22T23:37:56.1289012+00:00", "et": "2018-08-22T23:37:56.1289012+00:00" }, { "p": "patient", "r": "Patient/example" }, { "p": "performer", "r": "Practitioner/example" }, { "p": "related", "r_0": "Observation/example-genetics-1", "s_1": "http://hl7.org/fhir/observation-relationshiptypes", "c_1": "derived-from" }, { "p": "related-target", "r": "Observation/example-genetics-1" }, { "p": "related-type", "s": "http://hl7.org/fhir/observation-relationshiptypes", "c": "derived-from" }, { "p": "status", "s": "http://hl7.

Background I worked on APIs and OpenAPI Spec (OAS) in past projects, even I used stoplight and NLP for open-source API style guide enforce and linting. I thought I was quite good at jsonschema. I dont’k think so after recent usage of jsonschema for a very aspnet flexible configuration file. Configurations in dotnet are quite straight forwards if all the configurations following the Options pattern. ConfigurationProcessor is not that case.

Yesterday, I clicked a button in one web page, no response from that. I thought it must be something wrong. I opened browser console and noticed there is an icon. It turned out be a copilot icon after reading the logs in console. Nowadays, copilot almost is everywhere, office suite, vscode, visual studio, windows and edge browser. Never thought it is embedded in browse web console.

Prologue One or two years ago, I tried several times to install kind cluster to using cilium cni. However I didn’t make it. Today I really want to setup one after reading an Kind cluster with Cilium and no kube-proxy and considering that major kubernetes distributions are using cilium cni now. After about 3 hours, I finally got it running successfully. Things don’t go smoothly. Here are my steps to setup it up.

Stackoverflow give several ways to resolve localhost HSTS issue (redirect from http to https). My laptop is managed by my employer and registry can’t be edited. "How can I see which sites have set the HSTS flag in my edge browser?" in chatgpt give me an answers. One step of the answer get my attention. I can change HSTS in my application for development environment. It is too late now.

I searched web, first several links in SERP are not the offical one from microsoft. I tried them and failed to install mssql due to errors Error: 'deb [arch=amd64 https://download.docker.com/linux/ubuntu \ xenial \ stable' invalid] or Can’t install MS SQL Server on Ubuntu 21.10. At last I follow the instruction from microsoft. I successfully installed mssql server in my wsl+ubuntu22.04 environment. curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | sudo gpg --dearmor -o /usr/share/keyrings/microsoft-prod.