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Python function to calculate overhead of Memcached items
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| def calc_max_data_len(chunk_size, key_length=0, cas_enabled=True): | |
| max_data = chunk_size - (key_length + 1) # less null terminated key | |
| max_data -= 48 # item overhead | |
| if cas_enabled: | |
| max_data -= 8 # bytes for cas | |
| max_data -= 2 # data termination \r\n | |
| max_data -= len(" 0 %d\r\n" % max_data) # max header with flags 0 | |
| return max_data |
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