Encapsulate a timestamp
Main application: update blogs, comments, etc. with time at the end
function dateStr(d,sign){ if(!sign){ sign=’-‘ }else{ sign = sign; } let year = d.g
Tag: time
What general guidelines and best practices are needed when designing a database for an application?
My question is about database modeling. I tried to look for this question in other database design questions on SO, but haven’t found it yet, so I’m asking here:
What are the general guidelin
Performance – The query is very slow when loading on PostgreSQL
We are using PostgreSQL version 9.4 database on Amazon EC2. All of our queries ran very slow on the first attempt, until after it was cached they were very fast, but it was not Mediation because it
Performance – Accelerate compilation time using USB key?
Since the compilation is mainly to read small files, I would like to know whether buying a fast USB key can speed up the compilation time, compared with standard SATA drives, and the price is lower
Performance – Android studio takes a long time to open
When I click the android studio icon on the desktop, it takes 5-10 minutes or more to open the android studio window.
Then Gradle builds It takes a long time to refresh, even though I have se
Performance – When I use a thread, why will my Perl script slowly decompress the file?
So I run perl 5.10 on core 2 duo macbook pro compiled with thread support: usethreads = define, useithreads = define. I have a simple script to read 4 gzip files , Each file contains 750,000 lines.
Partition – whether the partition key is required when retrieved by the document ID
Can a document be retrieved by its ID without specifying a partition key?
My understanding when reading the documentation is that when the partition key is not specified, the query will fan o
Does PHP replicates variables when retrieving from shared memory?
If I run shm_get_var(), it will return a “reference” to save the data in shared memory?
I want to keep an array of about 50MB in shared memory so that it can be used by multiple processes wit
Performance – Normal Operation Time using Graphite Grafana Measurement Services
My question is a bit philosophical: How do you calculate the uptime of a process based on its Graphite metrics?
I have many instances of jvm-process (Apache Spark). Everyone reports metrics t
Sybase – Index Property Precautions
I have a table in SYBASE, which has about 1 billion rows. There is currently no index created for this table, I want to create one now. My question is >Before creating an index, what precauti