https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Fri, 15 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive.en The 2026 landscape of distributed messaging. Kafka 3.9 made KRaft the default and ZooKeeper is gone. WarpStream put the Kafka API on top of S3 and was acquired by Confluent. Redpanda pushes Kafka compatibility in C++, NATS became a single-infra play with JetStream/KV/ObjectStore, and Pulsar 4.0 runs code on streams with Functions. RabbitMQ 4.0 dropped Mnesia for Khepri (Raft). We cover Kafka, NATS, Redpanda, Pulsar, RabbitMQ 4, RocketMQ, NSQ, Memphis (Superstream), WarpStream, and Buf Stream — paradigms, operations, cost, and KR/JP adoption — in one go. Fri, 15 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) messagingdistributed-systemskafkanatsredpandapulsarrabbitmqrocketmqwarpstreamevent-streamingkraft2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive.ja 2026 年の分散メッセージング地図。Kafka 3.9 で KRaft が既定となり ZooKeeper は消えた。WarpStream は S3 上に Kafka API を載せて Confluent に買収された。Redpanda は C++ で Kafka 互換を推し進め、NATS は JetStream/KV/ObjectStore で単一インフラ化し、Pulsar 4.0 は Functions でストリーム上にコードを置く。RabbitMQ 4.0 は Mnesia を捨て Khepri(Raft)へ移行。Kafka・NATS・Redpanda・Pulsar・RabbitMQ 4・RocketMQ・NSQ・Memphis(Superstream)・WarpStream・Buf Stream を、パラダイム・運用・コスト・日韓事例まで一気に整理する。 Fri, 15 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) messagingdistributed-systemskafkanatsredpandapulsarrabbitmqrocketmqwarpstreamevent-streamingkraft2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive https://www.youngju.dev/blog/culture/2026-05-15-distributed-messaging-2026-kafka-nats-redpanda-pulsar-rabbitmq-warpstream-deep-dive 2026년 분산 메시징 지형도. Kafka 3.9는 KRaft가 기본이 되었고 ZooKeeper는 사라졌다. WarpStream은 S3 위에 Kafka API를 올렸고 Confluent에 인수됐다. Redpanda는 C++로 Kafka 호환을 밀고, NATS는 JetStream/KV/ObjectStore로 단일 인프라가 되었으며, Pulsar 4.0은 Functions로 스트림 위에서 코드를 돌린다. RabbitMQ 4.0은 Mnesia를 버리고 Khepri(Raft)를 채택했다. Kafka·NATS·Redpanda·Pulsar·RabbitMQ 4·RocketMQ·NSQ·Memphis(Superstream)·WarpStream·Buf Stream을 패러다임·운영·비용·KR/JP 사례까지 한 번에 정리한다. Fri, 15 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) messagingdistributed-systemskafkanatsredpandapulsarrabbitmqrocketmqwarpstreamevent-streamingkraft2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive.en In the spring of 2026, secure messaging no longer fits in one sentence. Signal remains the gold standard, now reinforced by Meredith Whittaker after the September 2024 board reshuffle and by PQXDH for post-quantum forward secrecy. Matrix abandoned its React Native client and rebuilt Element X on a Rust SDK with sliding sync. SimpleX dropped the very idea of user IDs to cut metadata at the source. Session combined the Signal protocol with the Loki/Oxen distributed node network. Briar proved real peer-to-peer that runs without the internet at all, while Cwtch put anonymous group chat on top of Tor. Wire and Threema fortified the enterprise and paid markets, Olvid was acquired by the French government, and AWS shut down the consumer side of Wickr. And above all of that, RFC 9420 MLS established itself as the new standard for group messaging — WhatsApp adopted it, Webex followed, X Premium too. This article walks through every branch of secure messaging in spring 2026. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) privacymessagingsignalmatrixelement-xsimplexsessionbriarcwtchwirethreemamlse2eepqxdhrfc-94202026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive.ja 2026年春、セキュアメッセージング(secure messaging)はもはや一文では整理できない。Signalは2024年9月にTrust Acker信頼委員長が辞任した後、Meredith Whittaker会長体制で地位を固め、PQXDHで耐量子計算機性まで一歩踏み出した。MatrixはReactクライアントを捨ててRustで書き直したElement Xとsliding syncで新たに出発し、SimpleXはユーザーID自体を取り除いてメタデータを根本的に断つ道を選んだ。SessionはSignalプロトコルにLoki/Oxen分散ノード網を組み合わせ、Briarはインターネットが無くても動作する真のP2Pを示した。CwtchはTorの上にメタデータ抵抗を、WireとThreemaは企業/有料市場を、Olvidはフランス政府が丸ごと買収し、WickrはAWSがコンシューマを閉じた。そしてそのすべての上にRFC 9420 MLSがグループメッセージングの新しい標準として座を占めた。WhatsAppがMLSを採用し、Webexも、X Premiumも追随した。本稿は2026年春のセキュアメッセージングのすべての枝葉を一息で整理する。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) privacymessagingsignalmatrixelement-xsimplexsessionbriarcwtchwirethreemamlse2eepqxdhrfc-94202026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-secure-messaging-2026-signal-matrix-element-x-simplex-session-mls-rfc-9420-deep-dive 2026년 봄, 안전한 메시징(secure messaging)은 더 이상 한 줄로 정리되지 않는다. Signal은 2024년 9월 트러스트 위원장 케이트 애커(Katherine Maher가 아닌 Trust Acker)가 사임한 뒤 회장 메러디스 위태커 체제로 자리를 굳혔고, PQXDH로 양자내성까지 한 발 내딛었다. Matrix는 리액트 클라이언트를 버리고 러스트로 다시 쓴 Element X와 슬라이딩 싱크로 새로운 출발을 했고, SimpleX는 사용자 ID 자체를 없애 메타데이터를 원천 차단하는 길을 갔다. Session은 Signal 프로토콜에 Loki/Oxen 분산 노드 망을 결합했고, Briar는 인터넷이 없어도 동작하는 진정한 P2P를 보였다. Cwtch는 Tor 위에 메타데이터 저항을, Wire와 Threema는 기업/유료 시장을, Olvid는 프랑스 정부가 통째로 사들였고, Wickr는 AWS가 컨슈머를 닫았다. 그리고 그 모든 위에 RFC 9420 MLS가 그룹 메시징의 새 표준으로 자리를 잡았다. WhatsApp이 MLS를 채택했고, Webex도, X Premium도 따랐다. 이 글은 2026년 봄 안전한 메시징의 모든 갈래를 한 호흡으로 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) privacymessagingsignalmatrixelement-xsimplexsessionbriarcwtchwirethreemamlse2eepqxdhrfc-94202026deep-dive