agent-shell-dot-subdir-function now lets you customize where agent-shell keeps per-project files (#378 by @zackattackz).
The second difference is the equal sign instead of less-than-or-equal. This means the frictional force is constant as long as the object is sliding—it doesn’t equal the applied force anymore. That means the net force isn’t zero. Push harder on the chair by running and the chair will speed up.
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And the pressure didn’t stop at ETS. OTP 21 added persistent_term, a global immutable store optimized for data that is read constantly and written rarely (e.g. configuration, routing tables, compiled regular expressions), because even ETS had too much overhead for those access patterns. OTP 22 added the atomics and counters modules: direct shared-memory operations with no copying, no message passing, and no process involvement at all. Each addition moved further from the isolation model, because each addressed a performance gap the previous escape hatch couldn’t close.。关于这个话题，谷歌提供了深入分析
FT App on Android & iOS，详情可参考超级权重