Allowed R6 · Within policy
{
"company": "instabug",
"page": 1,
"total": 18,
"questions": [
{
"slug": "chat-system-takehome",
"title": "Chat System Take-home",
"difficulty": "hard",
"tags": [
"system-design",
"backend",
"take-home"
],
"is_free": false,
"locked": true,
"frequency": 1,
"last_reported_at": "2026-05-12T11:13:04.535396Z",
"url": "https://www.mokabla.com/en/c/instabug/chat-system-takehome",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/chat-system-takehome",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=chat-system-takehome"
}
},
{
"slug": "sql-bugs-table-indexes",
"title": "SQL Take-home: The Bugs Table and Its Index",
"difficulty": "hard",
"tags": [
"sql",
"intern",
"backend",
"take-home"
],
"is_free": false,
"locked": true,
"frequency": 1,
"last_reported_at": "2026-04-28T18:13:02.763440Z",
"url": "https://www.mokabla.com/en/c/instabug/sql-bugs-table-indexes",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/sql-bugs-table-indexes",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=sql-bugs-table-indexes"
}
},
{
"slug": "backend-intern-process",
"title": "Backend Intern Process",
"difficulty": "easy",
"tags": [
"behavioral",
"phone",
"intern",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 1,
"last_reported_at": "2026-03-25T10:13:08.182924Z",
"url": "https://www.mokabla.com/en/c/instabug/backend-intern-process",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/backend-intern-process",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=backend-intern-process"
}
},
{
"slug": "sql-students-and-courses",
"title": "SQL Take-home: Students and Courses",
"difficulty": "medium",
"tags": [
"sql",
"intern",
"backend",
"take-home"
],
"is_free": false,
"locked": true,
"frequency": 1,
"last_reported_at": "2026-03-11T14:13:01.878178Z",
"url": "https://www.mokabla.com/en/c/instabug/sql-students-and-courses",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/sql-students-and-courses",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=sql-students-and-courses"
}
},
{
"slug": "ios-takehome",
"title": "iOS Take-home",
"difficulty": "medium",
"tags": [
"mobile",
"role-mobile",
"take-home"
],
"is_free": false,
"locked": true,
"frequency": 1,
"last_reported_at": "2026-03-06T14:13:07.420308Z",
"url": "https://www.mokabla.com/en/c/instabug/ios-takehome",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/ios-takehome",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=ios-takehome"
}
},
{
"slug": "bounded-worker-pool",
"title": "Bounded Worker Pool",
"difficulty": "hard",
"tags": [
"coding",
"technical",
"backend"
],
"is_free": true,
"locked": false,
"frequency": 0.8,
"last_reported_at": "2026-08-23T08:54:23.813715Z",
"url": "https://www.mokabla.com/en/c/instabug/bounded-worker-pool",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/bounded-worker-pool",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=bounded-worker-pool"
}
},
{
"slug": "lagging-counters",
"title": "Counters That May Lag an Hour",
"difficulty": "easy",
"tags": [
"system-design",
"technical",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.8,
"last_reported_at": "2026-07-15T22:13:06.689300Z",
"url": "https://www.mokabla.com/en/c/instabug/lagging-counters",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/lagging-counters",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=lagging-counters"
}
},
{
"slug": "chat-numbering-race",
"title": "Chat Numbering Without Duplicates",
"difficulty": "medium",
"tags": [
"coding",
"system-design",
"technical",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.8,
"last_reported_at": "2026-06-04T10:13:05.207835Z",
"url": "https://www.mokabla.com/en/c/instabug/chat-numbering-race",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/chat-numbering-race",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=chat-numbering-race"
}
},
{
"slug": "sql-harder-variants",
"title": "Harder SQL Variants",
"difficulty": "hard",
"tags": [
"sql",
"technical",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.8,
"last_reported_at": "2026-05-22T22:13:03.735572Z",
"url": "https://www.mokabla.com/en/c/instabug/sql-harder-variants",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/sql-harder-variants",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=sql-harder-variants"
}
},
{
"slug": "message-search-elasticsearch",
"title": "Message Search with Elasticsearch",
"difficulty": "medium",
"tags": [
"system-design",
"technical",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.8,
"last_reported_at": "2026-02-11T19:13:05.998223Z",
"url": "https://www.mokabla.com/en/c/instabug/message-search-elasticsearch",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/message-search-elasticsearch",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=message-search-elasticsearch"
}
},
{
"slug": "streaming-percentiles",
"title": "Streaming Percentiles",
"difficulty": "hard",
"tags": [
"coding",
"algorithms-theory",
"technical",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-08-11T13:54:26.570356Z",
"url": "https://www.mokabla.com/en/c/instabug/streaming-percentiles",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/streaming-percentiles",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=streaming-percentiles"
}
},
{
"slug": "stack-trace-grouping",
"title": "Stack Trace Grouping",
"difficulty": "medium",
"tags": [
"coding",
"oa",
"swe",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-07-22T08:54:27.340900Z",
"url": "https://www.mokabla.com/en/c/instabug/stack-trace-grouping",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/stack-trace-grouping",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=stack-trace-grouping"
}
},
{
"slug": "crash-ingestion-pipeline",
"title": "Crash Ingestion Pipeline",
"difficulty": "hard",
"tags": [
"system-design",
"onsite",
"backend"
],
"is_free": true,
"locked": false,
"frequency": 0.6,
"last_reported_at": "2026-07-16T17:54:24.699509Z",
"url": "https://www.mokabla.com/en/c/instabug/crash-ingestion-pipeline",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/crash-ingestion-pipeline",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=crash-ingestion-pipeline"
}
},
{
"slug": "hardest-bug-story",
"title": "Hardest Bug Story",
"difficulty": null,
"tags": [
"behavioral",
"final",
"swe"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-07-07T08:54:28.824680Z",
"url": "https://www.mokabla.com/en/c/instabug/hardest-bug-story",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/hardest-bug-story",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=hardest-bug-story"
}
},
{
"slug": "sdk-offline-queue",
"title": "SDK Offline Queue",
"difficulty": "hard",
"tags": [
"system-design",
"mobile",
"onsite"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-06-22T13:54:25.288330Z",
"url": "https://www.mokabla.com/en/c/instabug/sdk-offline-queue",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/sdk-offline-queue",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=sdk-offline-queue"
}
},
{
"slug": "token-bucket-middleware",
"title": "Token Bucket Middleware",
"difficulty": "medium",
"tags": [
"coding",
"phone",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-06-10T12:54:28.089383Z",
"url": "https://www.mokabla.com/en/c/instabug/token-bucket-middleware",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/token-bucket-middleware",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=token-bucket-middleware"
}
},
{
"slug": "slow-endpoint-takehome",
"title": "Slow Endpoint Take-Home",
"difficulty": "medium",
"tags": [
"coding",
"devops",
"oa",
"backend"
],
"is_free": false,
"locked": true,
"frequency": 0.6,
"last_reported_at": "2026-06-05T13:54:25.928117Z",
"url": "https://www.mokabla.com/en/c/instabug/slow-endpoint-takehome",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/slow-endpoint-takehome",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=slow-endpoint-takehome"
}
},
{
"slug": "design-a-chat-system",
"title": "Design a chat system",
"difficulty": "medium",
"tags": [
"system-design",
"technical",
"swe"
],
"is_free": false,
"locked": true,
"frequency": 0.2,
"last_reported_at": "2026-10-30T16:15:08.847784Z",
"url": "https://www.mokabla.com/en/c/instabug/design-a-chat-system",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/instabug/design-a-chat-system",
"question": "https://www.mokabla.com/agent/_call/get_question?company=instabug&question=design-a-chat-system"
}
}
],
"access": "Question bodies are paid content: a person buys 30 days of access per company (200 EGP or 200 points) in the human app. Agents get titles, tags and difficulty; bodies only for free questions."
}