Mercurial > p > roundup > code
annotate roundup/cgi/TAL/TranslationContext.py @ 6565:2c2dbfc332ba
Try to handle multiple connections better.
The session database is a hot spot. When multiple requests (e.g. 20)
come in at the same time session database contention can get great.
The original code didn't retry session database access when the open
failed. This resulted in errors at the client.
The second pass delayed 0.01 seconds and retried. It was better but we
still had multiple second stalls. I think the first request got in,
everybody else backed up and then retried at the same time. Again they
stepped on each other. With logging I would see many counters go all
the way to low single digits or to -1 indicating falure.
This pass uses randomint to generate delays from 0-.125 seconds in 5ms
increments. This performs better in testing. I rarely saw a counter
less than 13 (2 failed retries). Current logging starts after 6
failures and counts down until success or failure.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Thu, 16 Dec 2021 20:02:00 -0500 |
| parents | 6e3e4f24c753 |
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| rev | line source |
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1 ############################################################################## |
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2 # |
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3 # Copyright (c) 2001, 2002 Zope Corporation and Contributors. |
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4 # All Rights Reserved. |
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5 # |
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6 # This software is subject to the provisions of the Zope Public License, |
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7 # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. |
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8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED |
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9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS |
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11 # FOR A PARTICULAR PURPOSE. |
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12 # |
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13 ############################################################################## |
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14 """Translation context object for the TALInterpreter's I18N support. |
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15 |
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16 The translation context provides a container for the information |
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17 needed to perform translation of a marked string from a page template. |
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18 """ |
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19 |
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20 DEFAULT_DOMAIN = "default" |
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21 |
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22 class TranslationContext: |
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23 """Information about the I18N settings of a TAL processor.""" |
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24 |
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25 def __init__(self, parent=None, domain=None, target=None, source=None): |
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26 if parent: |
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27 if not domain: |
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28 domain = parent.domain |
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29 if not target: |
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30 target = parent.target |
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31 if not source: |
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32 source = parent.source |
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33 elif domain is None: |
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34 domain = DEFAULT_DOMAIN |
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35 |
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36 self.parent = parent |
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37 self.domain = domain |
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38 self.target = target |
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39 self.source = source |
