code-snippets

Code snippets

Blackbox Testing

• jepsen-etcd
  • jepsen etcd test using docker compose

Postgres Extensions

• pgrx-data-retention
  • pgrx extension based background worker to delete rows from a table based on a retention policy defined in a config table

LLMs

• vllm-openwebui
  • terraform provision ec2 spot g6.xlarge instance
  • use docker compose to setup vllm inference server for gemma-3-1b-it (huggingface)
  • use openwebui to access the inference server
  • lm evaluation harness - gsm8k eval on gemma-3-1b-it
  • setup traefik rev proxy with subdomain using sslip.io
  • grafana dashboard for vllm serving metrics
  • promptfoo eval & model-scan
  • failed attempt at [latitude.so] setup

K8s

• rancher + multi region eks cluster
  • provision infrastructure using terraform
    • network - vpc & subnets (public, private w NAT)
    • rancher management server - ec2 server w k3s & rancher
    • downstream clusters - eks clusters in 2 aws regions
  • post-provisioning downstream cluster setup using rancher fleet
    • use fleet to create cluster groups
    • use fleet gitrepo bundles to setup
      • istio
• kubers-ingress-operator
  • pay to call api
    • solidity smart contract for payments + k8s operator & custom ingress auth middleware to allow access upon payment using digital signature as api key

Postgres Data Movement

Logical Replication

• sequin-postgres-cdc
  • use sequin to consume postgres logical replication changes & publish to kafka
• postgres-stream-using-logical-replication
  • use debezium engine + spring boot to consume postgres logical replication changes & publish to kafka

COPY

• postgres-stream-using-watermark-table
  • use COPY (..) TO STDOUT to stream data from postgres to kafka

PGLite

• pgwire-pglite
  • pglite + pglite-socket to be able to use psql with pglite
  • can use for running in memory postgres for testing in k8s env without access to local file system where traditional postgres cannot run

Redpanda Connect

• redpanda-connect-websocket-source-clickhouse-sink
  • use redpanda connect to scrape websocket & publish to redpanda topic & sink to clickhouse db
• redpanda-connect-s3-source-clickhouse-sink
  • use redpanda connect to scrape s3 & publish to redpanda topic & sink to clickhouse db

Rust

• rs-s3-duckdb
  • read file from 3rd party s3, parse it, write to duckdb

Spark

• pyspark-s3-batch-clickhouse
  • read file from s3, parse it, write to clickhouse
  • terraform create clickhouse server & emr serverles application

Rule Engine

• antlr4-parser
  • writing a grammar & generating parser for that grammar
• drools-rule-engine
  • implement API request validation using drools rule engine in spring boot

IaaC

• pulumi-python/clickhouse

  • provision clickhouse cluster using pulumi IaaC

• terraform

  • terraform code snippets

Telegram Bot

• tg-bot
  • telegram bot