The Conf 2019 - Elixir - Emerson Macedo
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Replacing an old C TCP Service with Elixir HTTP.
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The Conf 2019 - Elixir - Emerson Macedo
- 1. Emerson Macedo @emerleite s/15 years TCP C/HTTP Elixir/g
- 2. Who am I? Emerson Macedo @emerleite Software Engineer
- 21. Read this 3 books
- 24. External software view :)
- 27. “When disorder increases in software, programmers call it Software Rot” Andrew Hunt - The Pragmatic Programmer
- 28. e o u t ú v I I 3 à U e FA 3 E à e goewis E o 2 ÉsO no 1 É A 3 OU TIME Software Rot
- 30. Marketplaces
- 31. Ad insertion
- 32. Ad insertion
- 33. Ad insertion
- 34. 1995
- 35. Ad insertion
- 36. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion
- 37. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertionWhats wrong with this software?
- 38. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion No single line of automated tests Pool of TCP Trans Servers Other TCP Service Ad Insertion Other TCP Service
- 39. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion Lots of memory leaks Pool of TCP Trans Servers Other TCP Service Ad Insertion Other TCP Service
- 40. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion High-cost infrastructure Pool of TCP Trans Servers Other TCP Service Ad Insertion Other TCP Service
- 41. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion Single file with 2k lines of code Pool of TCP Trans Servers Other TCP Service Ad Insertion Other TCP Service
- 42. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion Ad-hoc TCP Plain Text Service protocol Pool of TCP Trans Servers Other TCP Service Ad Insertion Other TCP Service
- 43. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertionWhats wrong with this software?
- 44. Pool of TCP Trans Servers Postgres Ha Proxy Route PG functions Other TCP Service Ad Insertion Other TCP Service Ad insertion 400 lines of Business logic inside a single Postgres function Postgres PG functions
- 45. External software view :)
- 46. Ad insertion
- 48. mutex pthreads
- 49. cmd Parse
- 50. daemon ad-hoc
- 51. pid handle
- 52. FSM interface
- 54. memory clean-up
- 55. psql function
- 56. “In most projects, the first system build is barely usable…. Hence plan to throw one away; you will, anyhow.” Fred Brooks - The Mythical Man-Month
- 57. 2018
- 58. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertion
- 59. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertionHow this new version is better?
- 60. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertion Standard HTTP + JSON Service protocol AWS ECS Cluster Other HTTP Service Elixir Ad Insertion Other HTTP Service
- 61. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertion Standard AWS + ECS terraformed Infrastructure AWS ECS Cluster Other HTTP Service Elixir Ad Insertion Other HTTP Service
- 62. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertion Standard HTTP + JSON Service protocol AWS ECS Cluster Other HTTP Service Elixir Ad Insertion Other HTTP Service
- 63. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertionWhat's not good yet?
- 64. AWS ECS Cluster Postgres Nginx Route PG functions Other HTTP Service Elixir Ad Insertion Other HTTP Service Ad insertion People still uses the Database as a single point of integration Postgres PG functions
- 66. Postgres Frontend HTTP Write Other Service B TCP Ad Insertion Other Service A TCP C Service call Read Read JSON Backend Service TCP Plain
- 67. Postgres Frontend HTTP Write Other Service B TCP Ad Insertion Other Service A TCP C Service call Read Read JSON Backend Service TCP PlainAd-hoc TCP Plain Text Service protocol TCP Ad Insertion Backend Service TCP Plain
- 68. Postgres Frontend HTTP Other Service B Other Service A Read Read JSON Backend Service HTTP JSON HTTP Elixir Service call Write Elixir Ad Insertion
- 69. Postgres Frontend HTTP Other Service B Other Service A Read Read JSON Backend Service HTTP JSON HTTP Elixir Service call Write Elixir Ad Insertion Backend Service HTTP JSON Elixir Ad Insertion Standard HTTP + JSON Service protocol
- 70. same JSON
- 74. data Integrity
- 75. data Integrity
- 78. e o u t ú v I I 3 à U e FA 3 E à e goewis E o 2 ÉsO no 1 É A 3 OU TIME Software Rot
- 81. That’s all folks Emerson Macedo @emerleite https://blog.emerleite.com