[server] Make connection pooler configurable and set better default values Drop the configuration connections-pool-size and add new configurations options: * connections-pool-min-size. Set to 0 by default so we open connections only when needed. This avoid opening min-size*processes connections at startup, which is, it think, a good default. * connections-pool-max-size. Set to 0 (unlimited) by default, so we move the bottleneck to postgresql. * connections-idle-timeout. Set to 10 minutes. I don't have arguments about this except that this is the default in pgbouncer.

from yams.constraints import UniqueConstraint

for rschema in schema.relations():
    if rschema.rule or not rschema.final:
        continue
    for rdef in rschema.rdefs.values():
        if (rdef.object != 'String'
                and any(isinstance(cstr, UniqueConstraint) for cstr in rdef.constraints)):
            table = 'cw_{0}'.format(rdef.subject)
            column = 'cw_{0}'.format(rdef.rtype)
            repo.system_source.create_index(cnx, table, column, unique=True)