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Guide to pick the right MergeTree engine (plain, replicated, aggregating, collapsing) based on replication, aggregation, and update‑handling needs for time‑series data.
Compare CIO, Jetty, Apache, and OkHttp engines in Ktor to pick the best fit for your JVM/Android/iOS/Native project.
For a low-traffic Ktor service, the dominant operational cost is often idle resource consumption: resident memory, parked threads, and event-loop overhead. Ktor offers several server engines—Netty, CIO, Jetty, Tomcat—each with distinct threading and I/O models. Netty relies on event loops and channel pools; CIO is built directly on coroutines and advertises
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