The built-in "_bind" view does not allow recursion and therefore does
not need a large cache database. However, as "max-cache-size" is not
explicitly set for that view in the default configuration, it inherits
that setting from global options. Set "max-cache-size" for the built-in
"_bind" view to a fixed value (2 MB, i.e. the smallest allowed value) to
prevent needlessly preallocating memory for its cache RBT hash table.
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