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#for an image ("not running container") use save: | |
docker save <dockernameortag> | gzip > mycontainer.tgz | |
#for running or paused docker, use export: | |
docker export <dockernameortag> | gzip > mycontainer.tgz | |
#load | |
gunzip -c mycontainer.tgz | docker load |
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from enum import Enum, EnumMeta | |
class ChoiceEnumMeta(EnumMeta): | |
def __iter__(self): | |
return ((tag, tag.value) for tag in super().__iter__()) | |
class ChoiceEnum(Enum, metaclass=ChoiceEnumMeta): | |
""" |
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from __future__ import unicode_literals | |
from django.db import models | |
from django.db.models.fields.related_descriptors import ForwardManyToOneDescriptor # noqa | |
class RelationNotLoaded(Exception): | |
pass | |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |