Architecture · 2017–2024 · Cloud Scale
Service mesh everywhere
Sidecar proxies for every microservice. Netflix problems with startup headcount.
Service mesh everywhere failed because sidecars multiply latency and operational surface faster than they solve auth between services you should have merged. mTLS and retries belong in libraries or platforms, not mandatory tax on every pod. The mesh stuck at true multi-team scale; the fad stuck in post-mortems.
Cost of the fad
Istio sidecars on three-service startups burned SRE headcount on mTLS ceremonies nobody could debug. Many teams ripped mesh out before the observability dashboard paid rent.
Context
Split everything, then pay for the glue
Hyperscale patterns escaped the companies that needed them. Containers unified packaging; Kubernetes became the cloud OS; microservices and NoSQL were sold as defaults. Mobile-first stuck because screens changed. Cargo-cult distributed systems stuck around as invoices. The durable move was packaging and ops maturity — not rewriting every app into a mesh.
Compare with
Related
Architecture · 2012–now
Microservices Everywhere
Independent deployability as religion. Correct for some; ruinous cargo-cult for most.
$ Teams split 4-person products into 40 services, then hired SREs to babysit the mesh. Many later consolidated — after years of distributed tracing invoices and on-call trauma. See case studies on premature microservices and big-bang cutovers for named failure modes.
Platform · 2014–now
Kubernetes
Container orchestration that became the cloud's OS. Overkill for many; unavoidable for many others.
Architecture · 2015–now
gRPC
Binary RPC with contracts. Fast internal glue that should never face the public internet without a gateway.