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@mbostock
mbostock / .block
Last active April 18, 2025 00:24
Google Maps + D3
license: gpl-3.0
@vlucas
vlucas / encryption.ts
Last active May 8, 2025 12:51
Stronger Encryption and Decryption in Node.js
import { createCipheriv, createDecipheriv, randomBytes } from "crypto";
const ENCRYPTION_KEY: string = process.env.ENCRYPTION_KEY || ""; // Must be 256 bits (32 characters)
const IV_LENGTH: number = 16; // For AES, this is always 16
/**
* Will generate valid encryption keys for use
* Not used in the code below, but generate one and store it in ENV for your own purposes
*/
export function keyGen() {
@marwei
marwei / how_to_reset_kafka_consumer_group_offset.md
Created November 9, 2017 23:39
How to Reset Kafka Consumer Group Offset

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

  1. List the topics to which the group is subscribed
kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

  1. Reset the consumer offset for a topic (preview)