Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Chris Angelico Newsgroups: comp.lang.python Subject: Re: asyncio - run coroutine in the background Date: Wed, 17 Feb 2016 02:28:46 +1100 Lines: 15 Message-ID: References: <8737sumpjl.fsf@elektro.pacujo.net> <87h9ha8lt0.fsf@jester.gateway.pace.com> <87d1rwpwo2.fsf@elektro.pacujo.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: news.uni-berlin.de ziSvCZDiejTkTjQSjeVSfAcooouqgXMHmwLJgykgwy7A== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; '(using': 0.07; 'postgresql': 0.07; 'cc:addr:python-list': 0.09; '"but': 0.09; 'wed,': 0.15; '2016': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'massively': 0.16; 'processes.': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:run': 0.16; 'threads': 0.16; 'wrote:': 0.16; '"you': 0.18; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'am,': 0.23; 'seems': 0.23; 'feb': 0.23; 'demonstrate': 0.23; 'header:In-Reply-To:1': 0.24; "doesn't": 0.26; 'switch': 0.27; 'message-id:@mail.gmail.com': 0.27; 'far,': 0.29; 'issues.': 0.29; 'code': 0.30; 'options': 0.33; 'received:google.com': 0.35; 'but': 0.36; 'received:209.85': 0.36; 'subject:: ': 0.37; 'received:209.85.213': 0.37; 'thought': 0.37; 'received:209': 0.38; 'subject:the': 0.39; 'where': 0.40; 'more': 0.63; 'worth': 0.67; 'frank': 0.72; 'chrisa': 0.84; 'divergent': 0.84; 'to:none': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=0qhzc5OsQPleAGLbKE2BVkPxalDdwsSyeH7pbVuaQBc=; b=McY5Y2Y0fAgxz/r0ly3pSy5RFfV5ltzJsOeZ7nF9K5OWfRETLgOr2P2YtVl7Y3LAYZ wzBSUNGEEm7yIP6LrA9rs1rXqihds4PEomns8fJuohH1i8pXrv3+9C0Jx2dVy6y8D0Rb mDI5IwS/SFKafDRvbLWusYkLnYmgRm6KUsdUYxTxmaf/YT3sIL4towse+1yFSNBrg2FG /C7sTDrz3UsIGh6muteRY41Tw677uZzmBxki6xiuNbcva+YXYVIXevgblMenkfar7wlg Dwmty0eaVFyucEYzhkCKy1F+QjNej+1gQtLqZrEsF4jgNJfwdbtXinDGPEe3yxRJMUGH RGkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:cc:content-type; bh=0qhzc5OsQPleAGLbKE2BVkPxalDdwsSyeH7pbVuaQBc=; b=E+RnQPZVb5nWnzn0SoX15UmwLO3hKEBcy93m+OaL2MTsh+8JKXPktyOq2cN3rxqzPh QyMvYG59poGCHtoBVhpDH5jakW6pDuFPHCpXCpFM+Hm3AvO/3QwdbSXHqsATl7Gl3ipN yYAEkS7wIpqD/HfHzbrIYzkmyC5NGxA2EtLeZ4e8m/dVoMOPHhBFSTBb6x4dQ+loMkfG DbtY68Vh0wHC8GTdG3/TmgW/URq+b6PRQHJ2JLLuh2FmJs+fvOp7SxTmehrVqdzFqTxk Y3wRijEd+I5lvhZD4X0vwQ9dia/cVbszqgYMCkW1LOMgevk8sf1eGDxlA6UzO2CYjiS0 YIug== X-Gm-Message-State: AG10YOQ07s037SsiqDzCOACgbX9V7ljm0pznzkhU1VTXfZmATLvXiQERV1+08tHx3wux4dufZz/XQNKhbbdtAw== X-Received: by 10.50.176.195 with SMTP id ck3mr19570816igc.94.1455636526173; Tue, 16 Feb 2016 07:28:46 -0800 (PST) In-Reply-To: X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21rc2 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:103015 On Wed, Feb 17, 2016 at 2:21 AM, Frank Millman wrote: > I would love to drive the database asynchronously, but of the three > databases I use, only psycopg2 seems to have asyncio support. As my > home-grown solution (using queues) seems to be working well so far, I am > sticking with that until I start to experience responsiveness issues. If > that happens, my first line of attack will be to switch from threads to > processes. And this is where we demonstrate divergent thought processes. *My* first line of attack if hybrid async/thread doesn't work would be to mandate a PostgreSQL backend, not to switch to hybrid async/process :) Is the added value of "you get three options of database back-end" worth the added cost of "but now my code is massively more complex"? ChrisA