PHP Serverless Project
Lambda Writable Folder Is /tmp

Lambda Writable Folder Is /tmp

by Bob Bloom
"The Lambda execution environment provides a file system for your code to use at /tmp. This space has a fixed size of 512 MB.  The same Lambda execution environment may be reused by multiple Lambda invocations to optimize performance. The /tmp area is preserved for the lifetime of the execution environment and provides a transient cache for data between invocations. Each time a new execution environment is created, this area is deleted. Consequently, this is intended as an ephemeral storage area. While functions may cache data here between invocations, it should be used only for data needed by code in a single invocation.  It’s not a place to store data permanently, and is better-used to support operations required by your code.  Operationally, working with files in /tmp is the same as your local hard disk, and offers fast I/O throughput."


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Luke Galea is a veteran technology leader who began coding professionally during the dot-com boom. While Ruby, Elixir, and Erlang are his tools of choice, PHP has remained a constant thread throughout his two-decade career spanning healthcare, dating, nutrition coaching, education, and workforce management. His journey includes scaling high volume consumer facing sites HotOrNot and Ashley Madison where PHP powered the core infrastructure. Even when working with other technologies, Luke has consistently leveraged PHP for marketing technology, community forums, and developer resources. A committed community builder, he founded Toronto's Erlang user group and actively supports the Toronto Elixir and GTA PHP communities. Currently focused on leadership coaching and technology advisory, Luke loves solving hard problems with smart people. Call him if you want to riff on something awesome.
Luke Galea
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Luke Galea is a veteran technology leader who began coding professionally during the dot-com boom. While Ruby, Elixir, and Erlang are his tools of choice, PHP has remained a constant thread throughout his two-decade career spanning healthcare, dating, nutrition coaching, education, and workforce management. His journey includes scaling high volume consumer facing sites HotOrNot and Ashley Madison where PHP powered the core infrastructure. Even when working with other technologies, Luke has consistently leveraged PHP for marketing technology, community forums, and developer resources. A committed community builder, he founded Toronto's Erlang user group and actively supports the Toronto Elixir and GTA PHP communities. Currently focused on leadership coaching and technology advisory, Luke loves solving hard problems with smart people. Call him if you want to riff on something awesome.
(Luke Galea's website)
Tolga Ercan is an accomplished technology executive with over two decades of experience leading high-performing engineering organizations across SaaS, fintech, and consumer technology sectors. He currently serves as Director of Engineering at Vetster, a veterinary telehealth platform redefining access to pet care through innovative digital solutions. Tolga has built a career scaling engineering teams, driving cloud migration strategies, and delivering resilient, scalable systems. His leadership experience includes senior roles at Instagram, Edmunds, and early-stage startups, where he has consistently championed technical excellence, operational efficiency, and cultural growth. He has also leveraged technologies such as Laravel to build and scale modern, customer-facing applications in startup environments, applying best practices in software architecture and agile development. As a supporter of the open source community, Tolga believes in the importance of open innovation and actively backs initiatives that advance software transparency, interoperability, and access. He is committed to fostering the future of technology through mentorship, organizational leadership, and community engagement.
Tolga Ercan
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Tolga Ercan is an accomplished technology executive with over two decades of experience leading high-performing engineering organizations across SaaS, fintech, and consumer technology sectors. He currently serves as Director of Engineering at Vetster, a veterinary telehealth platform redefining access to pet care through innovative digital solutions. Tolga has built a career scaling engineering teams, driving cloud migration strategies, and delivering resilient, scalable systems. His leadership experience includes senior roles at Instagram, Edmunds, and early-stage startups, where he has consistently championed technical excellence, operational efficiency, and cultural growth. He has also leveraged technologies such as Laravel to build and scale modern, customer-facing applications in startup environments, applying best practices in software architecture and agile development. As a supporter of the open source community, Tolga believes in the importance of open innovation and actively backs initiatives that advance software transparency, interoperability, and access. He is committed to fostering the future of technology through mentorship, organizational leadership, and community engagement.
(Tolga Ercan's website)